text: //定义一个区域图类：
  function GooFlow(bgDiv,property){
  	if (navigator.userAgent.indexOf("MSIE 8.0")>0||navigator.userAgent.indexOf("MSIE 7.0")>0||navigator.userAgent.indexOf("MSIE 6.0")>0)
  		GooFlow.prototype.useSVG="";
  	else	GooFlow.prototype.useSVG="1";
  //初始化区域图的对象
  	this.$id=bgDiv.attr("id");
  	this.$bgDiv=bgDiv;//最父框架的DIV
  	this.$bgDiv.addClass("GooFlow");
  	if(GooFlow.prototype.color.font){
      this.$bgDiv.css("color",GooFlow.prototype.color.font);
  	}
  	var width=(property.width||800)-2;
  	var height=(property.height||500)-2;
  	this.$bgDiv.css({width:width+"px",height:height+"px"});
  	this.$tool=null;//左侧工具栏对象
  	this.$head=null;//顶部标签及工具栏按钮
  	this.$title="newFlow_1";//流程图的名称
  	this.$nodeRemark={};//每一种结点或按钮的说明文字,JSON格式,key为类名,value为用户自定义文字说明
  	this.$nowType="cursor";//当前要绘制的对象类型
  	this.$lineData={};
  	this.$lineCount=0;
  	this.$nodeData={};
  	this.$nodeCount=0;
  	this.$areaData={};
  	this.$areaCount=0;
  	this.$lineDom={};
  	this.$nodeDom={};
  	this.$areaDom={};
  	this.$max=property.initNum||1;//计算默认ID值的起始SEQUENCE
  	this.$focus="";//当前被选定的结点/转换线ID,如果没选中或者工作区被清空,则为""
  	this.$cursor="default";//鼠标指针在工作区内的样式
  	this.$editable=false;//工作区是否可编辑
  	this.$deletedItem={};//在流程图的编辑操作中被删除掉的元素ID集合,元素ID为KEY,元素类型(node,line.area)为VALUE
  	var headHeight=0;
  	var tmp="";
  	if(property.haveHead){
  		tmp="<div class='GooFlow_head' "+(GooFlow.prototype.color.main? "style='border-bottom-color:"+GooFlow.prototype.color.main+"'" : "")
  		+">";
  		/*if(property.headLabel){
        tmp+="<label title='"+(property.initLabelText||"newFlow_1")+"' "
          +(GooFlow.prototype.color.main? "style='background:"+GooFlow.prototype.color.main+"'" : "")+">"+(property.initLabelText||"newFlow_1")+"</label>";
  		}*/
  		for(var x=0;x<property.headBtns.length;++x){
  			tmp+="<a href='javascript:void(0)' class='GooFlow_head_btn'><i class='ico_"+property.headBtns[x]+"'></i></a>"
  		}
  		tmp+="</div>";
  		this.$head=$(tmp);
  		this.$bgDiv.append(this.$head);
  		headHeight=24;
  		//以下是当工具栏按钮被点击时触发的事件自定义(虚函数),格式为function(),因为可直接用THIS操作对象本身,不用传参；用户可自行重定义:
  		this.onBtnNewClick=null;//新建流程图按钮被点中
  		this.onBtnOpenClick=null;//打开流程图按钮定义
  		this.onBtnSaveClick=null;//保存流程图按钮定义
  		this.onFreshClick=null;//重载流程图按钮定义
  		if(property.headBtns)
  		this.$head.on("click",{inthis:this},function(e){
  			if(!e)e=window.event;
  			var tar=e.target;
  			if(tar.tagName=="DIV"||tar.tagName=="SPAN")	return;
  			else if(tar.tagName=="a")	tar=tar.childNode[0];
  			var This=e.data.inthis;
  			//定义顶部操作栏按钮的事件
  			switch($(tar).attr("class")){
  				case "ico_new":		if(This.onBtnNewClick!=null)	This.onBtnNewClick();break;
  				case "ico_open":	if(This.onBtnOpenClick!=null)	This.onBtnOpenClick();break;
  				case "ico_save":	if(This.onBtnSaveClick!=null)	This.onBtnSaveClick();break;
  				case "ico_undo":	This.undo();break;
  				case "ico_redo":	This.redo();break;
  				case "ico_reload"	:if(This.onFreshClick!=null)	This.onFreshClick();break;
  			}
  		});
  	}
  	var toolWidth=0;
  	if(property.haveTool){
  		this.$bgDiv.append("<div class='GooFlow_tool'"+(property.haveHead? "":" style='margin-top:3px'")+"><div style='height:"+(height-headHeight-(property.haveHead? 7:10))+"px' class='GooFlow_tool_div'></div></div>");
  		this.$tool=this.$bgDiv.find(".GooFlow_tool div");
  		//未加代码：加入绘图工具按钮
  		this.$tool.append(
  			"<a href='javascript:void(0)' type='cursor' class='GooFlow_tool_btndown' id='"+this.$id+"_btn_cursor'><i class='ico_cursor'></i></a>"
  			+"<a href='javascript:void(0)' type='direct' class='GooFlow_tool_btn' id='"+this.$id+"_btn_direct'><i class='ico_direct'></i></a>"
      );
  		if(property.toolBtns&&property.toolBtns.length>0){
  			tmp="<span></span>";
  			for(var i=0;i<property.toolBtns.length;++i){
  				tmp+="<a href='javascript:void(0)' type='"+property.toolBtns[i]+"' id='"+this.$id+"_btn_"+property.toolBtns[i].split(" ")[0]+"' class='GooFlow_tool_btn'><i class='ico_"+property.toolBtns[i]+"'></i></a>";//加入自定义按钮
  			}
  			this.$tool.append(tmp);
  		}
  		//加入区域划分框工具开关按钮
  		if(property.haveGroup)
  			this.$tool.append("<span></span><a href='javascript:void(0)' type='group' class='GooFlow_tool_btn' id='"+this.$id+"_btn_group'><i class='ico_group'></i></a>");
  		toolWidth=31;
  		this.$nowType="cursor";
  		//绑定各个按钮的点击事件
  		this.$tool.on("click",{inthis:this},function(e){
  			if(!e)e=window.event;
  			var tar;
  			switch(e.target.tagName){
  				case "SPAN":return false;
  				case "DIV":return false;
  				case "I":	tar=e.target.parentNode;break;
  				case "A":	tar=e.target;
  			};
  			var type=$(tar).attr("type");
  			e.data.inthis.switchToolBtn(type);
  			return false;
  		});
  		this.$editable=true;//只有具有工具栏时可编辑
  	}
  	width=width-toolWidth-9;
  	height=height-headHeight-(property.haveHead? 5:8);
  	this.$bgDiv.append("<div class='GooFlow_work' style='width:"+(width)+"px;height:"+(height)+"px;"+(property.haveHead? "":"margin-top:3px")+"'></div>");
  	this.$workArea=$("<div class='GooFlow_work_inner' style='width:"+width+"px;height:"+height+"px'></div>")
  		.attr({"unselectable":"on","onselectstart":'return false',"onselect":'document.selection.empty()'});
  	this.$bgDiv.children(".GooFlow_work").append(this.$workArea);
  	this.$draw=null;//画矢量线条的容器
  	this.initDraw("draw_"+this.$id,width,height);
  	this.$group=null;
  	if(property.haveGroup)
  		this.initGroup(width,height);
  	if(this.$editable){
  	  this.$workArea.on("click",{inthis:this},function(e){
  		if(!e)e=window.event;
  		var This=e.data.inthis;
  		if(!This.$editable)return;
  		var type=This.$nowType;
  		if(type=="cursor"){
  			var t=$(e.target);
  			var n=t.prop("tagName");
  			//alert(n);
  			if(n=="svg"||(n=="DIV"&&t.prop("class").indexOf("GooFlow_work")>-1)||n=="LABEL"){
          if(This.$lineOper.data("tid")){
            This.focusItem(This.$lineOper.data("tid"),false);
            //This.$mpFrom.removeData("p");
          }
          else{This.blurItem();}
  			}
  			return;
  		}
  		else if(type=="direct"||type=="group")return;
  		var X,Y;
  		var ev=mousePosition(e),t=getElCoordinate(this);
  		X=ev.x-t.left+this.parentNode.scrollLeft-1;
  		Y=ev.y-t.top+this.parentNode.scrollTop-1;
  		This.addNode(This.$id+"_node_"+This.$max,{name:"node_"+This.$max,left:X,top:Y,type:This.$nowType});
  		This.$max++;
  	  });
  	  //划线或改线时用的绑定
  	  this.$workArea.mousemove({inthis:this},function(e){
  			if(e.data.inthis.$nowType!="direct"&&!e.data.inthis.$mpTo.data("p"))	return;
  			var lineStart=$(this).data("lineStart");
  			var lineEnd=$(this).data("lineEnd");
  			if(!lineStart&&!lineEnd)return;
  			
  			var ev=mousePosition(e),t=getElCoordinate(this);
  			var X,Y;
  			X=ev.x-t.left+this.parentNode.scrollLeft;
  			Y=ev.y-t.top+this.parentNode.scrollTop;
  			var line=document.getElementById("GooFlow_tmp_line");
  			if(lineStart){
  					if(GooFlow.prototype.useSVG!=""){
  					line.childNodes[0].setAttribute("d","M "+lineStart.x+" "+lineStart.y+" L "+X+" "+Y);
  					line.childNodes[1].setAttribute("d","M "+lineStart.x+" "+lineStart.y+" L "+X+" "+Y);
  					if(line.childNodes[1].getAttribute("marker-end")=="url(\"#arrow2\")")
  						line.childNodes[1].setAttribute("marker-end","url(#arrow3)");
  					else	line.childNodes[1].setAttribute("marker-end","url(#arrow2)");
  				}
  				else	line.points.value=lineStart.x+","+lineStart.y+" "+X+","+Y;
  			}else if(lineEnd){
  				if(GooFlow.prototype.useSVG!=""){
  					line.childNodes[0].setAttribute("d","M "+X+" "+Y+" L "+lineEnd.x+" "+lineEnd.y);
  					line.childNodes[1].setAttribute("d","M "+X+" "+Y+" L "+lineEnd.x+" "+lineEnd.y);
  					if(line.childNodes[1].getAttribute("marker-end")=="url(\"#arrow2\")")
  						line.childNodes[1].setAttribute("marker-end","url(#arrow3)");
  					else	line.childNodes[1].setAttribute("marker-end","url(#arrow2)");
  				}
  				else	line.points.value=X+","+Y+" "+lineEnd.x+","+lineEnd.y;
  			}
  	  });
  	  this.$workArea.mouseup({inthis:this},function(e){
  	  	var This=e.data.inthis;
  			if(This.$nowType!="direct"&&!This.$mpTo.data("p"))	return;
  			var tmp=document.getElementById("GooFlow_tmp_line");
  			if(tmp){
  				$(this).css("cursor","auto").removeData("lineStart").removeData("lineEnd");
          This.$mpTo.hide().removeData("p");
          This.$mpFrom.hide().removeData("p");
          This.$draw.removeChild(tmp);
          This.focusItem(This.$focus,false);
  			}else{
          This.$lineOper.removeData("tid");
  			}
  	  });
  	  //为了结点而增加的一些集体delegate绑定
  	  this.initWorkForNode();
  	  //对结点进行移动或者RESIZE时用来显示的遮罩层
  	  this.$ghost=$("<div class='rs_ghost'></div>").attr({"unselectable":"on","onselectstart":'return false',"onselect":'document.selection.empty()'});
  	  this.$bgDiv.append(this.$ghost);
  	  this.$textArea=$("<textarea></textarea>");
  	  this.$bgDiv.append(this.$textArea);
  	  this.$lineMove=$("<div class='GooFlow_line_move' style='display:block'></div>");//操作折线时的移动框
  	  this.$workArea.append(this.$lineMove);
  	  this.$lineMove.on("mousedown",{inthis:this},function(e){
  		  if(e.button==2)return false;
  		  var lm=$(this);
  		  lm.css({"background-color":GooFlow.prototype.color.font||"#333"});
  		  var This=e.data.inthis;
  		  var ev=mousePosition(e),t=getElCoordinate(This.$workArea[0]);
  		  var X,Y;
  		  X=ev.x-t.left+This.$workArea[0].parentNode.scrollLeft;
  		  Y=ev.y-t.top+This.$workArea[0].parentNode.scrollTop;
  		  var p=This.$lineMove.position();
  		  var vX=X-p.left,vY=Y-p.top;
  		  var isMove=false;
  		  document.onmousemove=function(e){
  			if(!e)e=window.event;
  			var ev=mousePosition(e);
  			var ps=This.$lineMove.position();
  			X=ev.x-t.left+This.$workArea[0].parentNode.scrollLeft;
  		 	Y=ev.y-t.top+This.$workArea[0].parentNode.scrollTop;
  			if(This.$lineMove.data("type")=="lr"){
  			  X=X-vX;
  			  if(X<0)	X=0;
  			  else if(X>This.$workArea.width())
  				X=This.$workArea.width();
  			  This.$lineMove.css({left:X+"px"});
  			}
  			else if(This.$lineMove.data("type")=="tb"){
  			  Y=Y-vY;
  			  if(Y<0)	Y=0;
  			  else if(Y>This.$workArea.height())
  				Y=This.$workArea.height();
  			  This.$lineMove.css({top:Y+"px"});
  		    }
  			isMove=true;
  		  }
  		  document.onmouseup=function(e){
  			if(isMove){
  				var p=This.$lineMove.position();
  				if(This.$lineMove.data("type")=="lr")
  					This.setLineM(This.$lineMove.data("tid"),p.left+3);
  				else if(This.$lineMove.data("type")=="tb")
  					This.setLineM(This.$lineMove.data("tid"),p.top+3);
  			}
  			This.$lineMove.css({"background-color":"transparent"});
  			if(This.$focus==This.$lineMove.data("tid")){
  				This.focusItem(This.$lineMove.data("tid"));
  			}
  			document.onmousemove=null;
  			document.onmouseup=null;
  		  }
  	  });
  	  //选定一条转换线后出现的浮动操作栏，有改变线的样式和删除线等按钮。
  	  this.$lineOper=$("<div class='GooFlow_line_oper' style='display:none'><i class='b_l1'></i><i class='b_l2'></i><i class='b_l3'></i><i class='b_x'></i></div>");//选定线时显示的操作框
  	  this.$workArea.parent().append(this.$lineOper);
  	  this.$lineOper.on("click",{inthis:this},function(e){
  	 	if(!e)e=window.event;
  		if(e.target.tagName!="I")	return;
  		var This=e.data.inthis;
  		var id=$(this).data("tid");
  		switch($(e.target).attr("class")){
  			case "b_x":	
  			This.delLine(id);
  			this.style.display="none";break;
  			case "b_l1":
  			This.setLineType(id,"lr");break;
  			case "b_l2":
  			This.setLineType(id,"tb");break;
  			case "b_l3":
  			This.setLineType(id,"sl");break;
  		}
  	  });
  	  //新增移动线两个端点至新的结点功能移动功能，这里要提供移动用的DOM
  		this.$mpFrom=$("<div class='GooFlow_line_mp' style='display:none'></div>");
  		this.$mpTo=$("<div class='GooFlow_line_mp' style='display:none'></div>");
  		this.$workArea.append(this.$mpFrom).append(this.$mpTo);
  		this.initLinePointsChg();
  	  
  	  //下面绑定当结点/线/分组块的一些操作事件,这些事件可直接通过this访问对象本身
  	  //当操作某个单元（结点/线/分组块）被添加时，触发的方法，返回FALSE可阻止添加事件的发生
  	  //格式function(id，type,json)：id是单元的唯一标识ID,type是单元的种类,有"node","line","area"三种取值,json即addNode,addLine或addArea方法的第二个传参json.
  	  this.onItemAdd=null;
  	  //当操作某个单元（结点/线/分组块）被删除时，触发的方法，返回FALSE可阻止删除事件的发生
  	  //格式function(id，type)：id是单元的唯一标识ID,type是单元的种类,有"node","line","area"三种取值
  	  this.onItemDel=null;
  	  //当操作某个单元（结点/分组块）被移动时，触发的方法，返回FALSE可阻止移动事件的发生
  	  //格式function(id，type,left,top)：id是单元的唯一标识ID,type是单元的种类,有"node","area"两种取值，线line不支持移动,left是新的左边距坐标，top是新的顶边距坐标
  	  this.onItemMove=null;
  	  //当操作某个单元（结点/线/分组块）被重命名时，触发的方法，返回FALSE可阻止重命名事件的发生
  	  //格式function(id,name,type)：id是单元的唯一标识ID,type是单元的种类,有"node","line","area"三种取值,name是新的名称
  	  this.onItemRename=null;
  	  //当操作某个单元（结点/线）被由不选中变成选中时，触发的方法，返回FALSE可阻止选中事件的发生
  	  //格式function(id,type)：id是单元的唯一标识ID,type是单元的种类,有"node","line"两种取值,"area"不支持被选中
  	  this.onItemFocus=null;
  	  //当操作某个单元（结点/线）被由选中变成不选中时，触发的方法，返回FALSE可阻止取消选中事件的发生
  	  //格式function(id，type)：id是单元的唯一标识ID,type是单元的种类,有"node","line"两种取值,"area"不支持被取消选中
  	  this.onItemBlur=null;
  	  //当操作某个单元（结点/分组块）被重定义大小或造型时，触发的方法，返回FALSE可阻止重定大小/造型事件的发生
  	  //格式function(id，type,width,height)：id是单元的唯一标识ID,type是单元的种类,有"node","line","area"三种取值;width是新的宽度,height是新的高度
  	  this.onItemResize=null;
  	  //当移动某条折线中段的位置，触发的方法，返回FALSE可阻止重定大小/造型事件的发生
  	  //格式function(id，M)：id是单元的唯一标识ID,M是中段的新X(或Y)的坐标
  	  this.onLineMove=null;
  	  //当变换某条连接线的类型，触发的方法，返回FALSE可阻止重定大小/造型事件的发生
  	  //格式function(id，type)：id是单元的唯一标识ID,type是连接线的新类型,"sl":直线,"lr":中段可左右移动的折线,"tb":中段可上下移动的折线
  	  this.onLineSetType=null;
  	  //当变换某条连接线的端点变更连接的结点时，触发的方法，返回FALSE可阻止重定大小/造型事件的发生
  	  //格式function(id，newStart,newEnd)：id是连线单元的唯一标识ID,newStart,newEnd分别是起始结点的ID和到达结点的ID
  	  this.onLinePointMove=null;
  	  //当用重色标注某个结点/转换线时触发的方法，返回FALSE可阻止重定大小/造型事件的发生
  	  //格式function(id，type，mark)：id是单元的唯一标识ID,type是单元类型（"node"结点,"line"转换线），mark为布尔值,表示是要标注TRUE还是取消标注FALSE
  	  this.onItemMark=null;
  	  
  	  if(property.useOperStack&&this.$editable){//如果要使用堆栈记录操作并提供“撤销/重做”的功能,只在编辑状态下有效
  		this.$undoStack=[];
  		this.$redoStack=[];
  		this.$isUndo=0;
  		///////////////以下是构造撤销操作/重做操作的方法
  		//为了节省浏览器内存空间,undo/redo中的操作缓存栈,最多只可放40步操作;超过40步时,将自动删掉最旧的一个缓存
  		this.pushOper=function(funcName,paras){
  			var len=this.$undoStack.length;
  			if(this.$isUndo==1){
  				this.$redoStack.push([funcName,paras]);
  				this.$isUndo=false;
  				if(this.$redoStack.length>40)	this.$redoStack.shift();
  			}else{
  				this.$undoStack.push([funcName,paras]);
  				if(this.$undoStack.length>40)	this.$undoStack.shift();
  				if(this.$isUndo==0){
  					this.$redoStack.splice(0,this.$redoStack.length);
  				}
  				this.$isUndo=0;
  			}
  		};
  		//将外部的方法加入到GooFlow对象的事务操作堆栈中,在过后的undo/redo操作中可以进行控制，一般用于对流程图以外的附加信息进行编辑的事务撤销/重做控制；
  		//传参func为要执行方法对象,jsonPara为外部方法仅有的一个面向字面的JSON传参,由JSON对象带入所有要传的信息；
  		//提示:为了让外部方法能够被UNDO/REDO,需要在编写这些外部方法实现时,加入对该方法执行后效果回退的另一个执行方法的pushExternalOper
  		this.pushExternalOper=function(func,jsonPara){
  			this.pushOper("externalFunc",[func,jsonPara]);
  		};
  		//撤销上一步操作
  		this.undo=function(){
  			if(this.$undoStack.length==0)	return;
  			this.blurItem();
  			var tmp=this.$undoStack.pop();
  			this.$isUndo=1;
  			if(tmp[0]=="externalFunc"){
  				tmp[1][0](tmp[1][1]);
  			}
  			else{
  			//传参的数量,最多支持6个.
  			switch(tmp[1].length){
  				case 0:this[tmp[0]]();break;
  				case 1:this[tmp[0]](tmp[1][0]);break;
  				case 2:this[tmp[0]](tmp[1][0],tmp[1][1]);break;
  				case 3:this[tmp[0]](tmp[1][0],tmp[1][1],tmp[1][2]);break;
  				case 4:this[tmp[0]](tmp[1][0],tmp[1][1],tmp[1][2],tmp[1][3]);break;
  				case 5:this[tmp[0]](tmp[1][0],tmp[1][1],tmp[1][2],tmp[1][3],tmp[1][4]);break;
  				case 6:this[tmp[0]](tmp[1][0],tmp[1][1],tmp[1][2],tmp[1][3],tmp[1][4],tmp[1][5]);break;
  			}
  			}
  		};
  		//重做最近一次被撤销的操作
  		this.redo=function(){
  			if(this.$redoStack.length==0)	return;
  			this.blurItem();
  			var tmp=this.$redoStack.pop();
  			this.$isUndo=2;
  			if(tmp[0]=="externalFunc"){
  				tmp[1][0](tmp[1][1]);
  			}
  			else{
  			//传参的数量,最多支持6个.
  			switch(tmp[1].length){
  				case 0:this[tmp[0]]();break;
  				case 1:this[tmp[0]](tmp[1][0]);break;
  				case 2:this[tmp[0]](tmp[1][0],tmp[1][1]);break;
  				case 3:this[tmp[0]](tmp[1][0],tmp[1][1],tmp[1][2]);break;
  				case 4:this[tmp[0]](tmp[1][0],tmp[1][1],tmp[1][2],tmp[1][3]);break;
  				case 5:this[tmp[0]](tmp[1][0],tmp[1][1],tmp[1][2],tmp[1][3],tmp[1][4]);break;
  				case 6:this[tmp[0]](tmp[1][0],tmp[1][1],tmp[1][2],tmp[1][3],tmp[1][4],tmp[1][5]);break;
  			}
  			}
  		};
  	  }
  	  $(document).keydown({inthis:this},function(e){
  		//绑定键盘操作
  		var This=e.data.inthis;
  		if(This.$focus=="")return;
    		switch(e.keyCode){
  			case 46://删除
  			This.delNode(This.$focus,true);
  			This.delLine(This.$focus);
  			break;
  		}
  	  });
  	}
  }
  GooFlow.prototype={
  	useSVG:"",
  	getSvgMarker:function(id,color){
  		var m=document.createElementNS("http://www.w3.org/2000/svg","marker");
  		m.setAttribute("id",id);
  		m.setAttribute("viewBox","0 0 6 6");
  		m.setAttribute("refX",5);
  		m.setAttribute("refY",3);
  		m.setAttribute("markerUnits","strokeWidth");
  		m.setAttribute("markerWidth",6);
  		m.setAttribute("markerHeight",6);
  		m.setAttribute("orient","auto");
  		var path=document.createElementNS("http://www.w3.org/2000/svg","path");
  		path.setAttribute("d","M 0 0 L 6 3 L 0 6 z");
  		path.setAttribute("fill",color);
  		path.setAttribute("stroke-width",0);
  		m.appendChild(path);
  		return m;
  	},
  	initDraw:function(id,width,height){
  		var elem;
  		if(GooFlow.prototype.useSVG!=""){
  			this.$draw=document.createElementNS("http://www.w3.org/2000/svg","svg");//可创建带有指定命名空间的元素节点
  			this.$workArea.prepend(this.$draw);
  			var defs=document.createElementNS("http://www.w3.org/2000/svg","defs");
  			this.$draw.appendChild(defs);
  			defs.appendChild(GooFlow.prototype.getSvgMarker("arrow1",GooFlow.prototype.color.line||"#3892D3"));
  			defs.appendChild(GooFlow.prototype.getSvgMarker("arrow2",GooFlow.prototype.color.mark||"#ff3300"));
  			defs.appendChild(GooFlow.prototype.getSvgMarker("arrow3",GooFlow.prototype.color.mark||"#ff3300"));
  		}
  		else{
  			this.$draw = document.createElement("v:group");
  			this.$draw.coordsize = width+","+height;
  			this.$workArea.prepend("<div class='GooFlow_work_vml' style='position:relative;width:"+width+"px;height:"+height+"px'></div>");
  			this.$workArea.children("div")[0].insertBefore(this.$draw,null);
  		}
  		this.$draw.id = id;
  		this.$draw.style.width = width + "px";
  		this.$draw.style.height = +height + "px";
  		//绑定连线的点击选中以及双击编辑事件
  		var tmpClk=null;
  		if(GooFlow.prototype.useSVG!="")  tmpClk="g";
  		else  tmpClk="PolyLine";
  		if(!this.$editable)	return;
  		
  		$(this.$draw).delegate(tmpClk,"click",{inthis:this},function(e){
  			e.data.inthis.focusItem(this.id,true);
  		});
  		$(this.$draw).delegate(tmpClk,"dblclick",{inthis:this},function(e){
  			var oldTxt,x,y,from,to;
  			var This=e.data.inthis;
  			if(GooFlow.prototype.useSVG!=""){
  				oldTxt=this.childNodes[2].textContent;
  				from=this.getAttribute("from").split(",");
  				to=this.getAttribute("to").split(",");
  			}else{
  				oldTxt=this.childNodes[1].innerHTML;
  				var n=this.getAttribute("fromTo").split(",");
  				from=[n[0],n[1]];
  				to=[n[2],n[3]];
  			}
  			if(This.$lineData[this.id].type=="lr"){
  				from[0]=This.$lineData[this.id].M;
  				to[0]=from[0];
  			}
  			else if(This.$lineData[this.id].type=="tb"){
  				from[1]=This.$lineData[this.id].M;
  				to[1]=from[1];
  			}
  			x=(parseInt(from[0],10)+parseInt(to[0],10))/2-60;
  			y=(parseInt(from[1],10)+parseInt(to[1],10))/2-12;
  			var t=getElCoordinate(This.$workArea[0]);
  			This.$textArea.val(oldTxt).css({display:"block",width:120,height:14,
  				left:t.left+x-This.$workArea[0].parentNode.scrollLeft,
  				top:t.top+y-This.$workArea[0].parentNode.scrollTop}).data("id",This.$focus).focus();
  			This.$workArea.parent().one("mousedown",function(e){
  				if(e.button==2)return false;
  				This.setName(This.$textArea.data("id"),This.$textArea.val(),"line");
  				This.$textArea.val("").removeData("id").hide();
  			});
  		});
  	},
  	initGroup:function(width,height){
  		this.$group=$("<div class='GooFlow_work_group' style='width:"+width+"px;height:"+height+"px'></div>");//存放背景区域的容器
  		this.$workArea.prepend(this.$group);
  		if(!this.$editable)	return;
  	  //区域划分框操作区的事件绑定
  	  this.$group.on("mousedown",{inthis:this},function(e){//绑定RESIZE功能以及移动功能
  		if(e.button==2)return false;
  		var This=e.data.inthis;
  		if(This.$nowType!="group")	return;
  		if(This.$textArea.css("display")=="block"){
  			This.setName(This.$textArea.data("id"),This.$textArea.val(),"area");
  			This.$textArea.val("").removeData("id").hide();
  			return false;
  		};
  		if(!e)e=window.event;
  		var cursor=$(e.target).css("cursor");
  		var id=e.target.parentNode;
  		switch(cursor){
  			case "nw-resize":id=id.parentNode;break;
  			case "w-resize":id=id.parentNode;break;
  			case "n-resize":id=id.parentNode;break;
  			case "move":break;
  			default:return;
  		}
  		id=id.id;
  		var hack=1;
  		if(navigator.userAgent.indexOf("8.0")!=-1)	hack=0;
  		var ev=mousePosition(e),t=getElCoordinate(This.$workArea[0]);
  
  		var X,Y;
  		X=ev.x-t.left+This.$workArea[0].parentNode.scrollLeft;
  		Y=ev.y-t.top+This.$workArea[0].parentNode.scrollTop;
  		if(cursor!="move"){
  			This.$ghost.css({display:"block",
  				width:This.$areaData[id].width-2+"px", height:This.$areaData[id].height-2+"px",
  				top:This.$areaData[id].top+t.top-This.$workArea[0].parentNode.scrollTop+hack+"px",
  				left:This.$areaData[id].left+t.left-This.$workArea[0].parentNode.scrollLeft+hack+"px",cursor:cursor});
  			var vX=(This.$areaData[id].left+This.$areaData[id].width)-X;
  			var vY=(This.$areaData[id].top+This.$areaData[id].height)-Y;
  		}
  		else{
  			var vX=X-This.$areaData[id].left;
  			var vY=Y-This.$areaData[id].top;
  		}
  		var isMove=false;
  		This.$ghost.css("cursor",cursor);
  		document.onmousemove=function(e){
  			if(!e)e=window.event;
  			var ev=mousePosition(e);
  			if(cursor!="move"){
  			X=ev.x-t.left+This.$workArea[0].parentNode.scrollLeft-This.$areaData[id].left+vX;
  			Y=ev.y-t.top+This.$workArea[0].parentNode.scrollTop-This.$areaData[id].top+vY;
  			if(X<200)	X=200;
  			if(Y<100)	Y=100;
  			switch(cursor){
  				case "nw-resize":This.$ghost.css({width:X-2+"px",height:Y-2+"px"});break;
  				case "w-resize":This.$ghost.css({width:X-2+"px"});break;
  				case "n-resize":This.$ghost.css({height:Y-2+"px"});break;
  			}
  			}
  			else{
  				if(This.$ghost.css("display")=="none"){
  					This.$ghost.css({display:"block",
  						width:This.$areaData[id].width-2+"px", height:This.$areaData[id].height-2+"px",
  						top:This.$areaData[id].top+t.top-This.$workArea[0].parentNode.scrollTop+hack+"px",
  						left:This.$areaData[id].left+t.left-This.$workArea[0].parentNode.scrollLeft+hack+"px",cursor:cursor});
  				}
  				X=ev.x-vX;Y=ev.y-vY;
  				if(X<t.left-This.$workArea[0].parentNode.scrollLeft)
  					X=t.left-This.$workArea[0].parentNode.scrollLeft;
  				else if(X+This.$workArea[0].parentNode.scrollLeft+This.$areaData[id].width>t.left+This.$workArea.width())
  					X=t.left+This.$workArea.width()-This.$workArea[0].parentNode.scrollLeft-This.$areaData[id].width;
  				if(Y<t.top-This.$workArea[0].parentNode.scrollTop)
  					Y=t.top-This.$workArea[0].parentNode.scrollTop;
  				else if(Y+This.$workArea[0].parentNode.scrollTop+This.$areaData[id].height>t.top+This.$workArea.height())
  					Y=t.top+This.$workArea.height()-This.$workArea[0].parentNode.scrollTop-This.$areaData[id].height;
  				This.$ghost.css({left:X+hack+"px",top:Y+hack+"px"});
  			}
  			isMove=true;
  		}
  		document.onmouseup=function(e){
  			This.$ghost.empty().hide();
  			document.onmousemove=null;
  			document.onmouseup=null;
  			if(!isMove)return;
  			if(cursor!="move")
  				This.resizeArea(id,This.$ghost.outerWidth(),This.$ghost.outerHeight());
  			else
  				This.moveArea(id,X+This.$workArea[0].parentNode.scrollLeft-t.left,Y+This.$workArea[0].parentNode.scrollTop-t.top);
  			return false;
  	  	}
  	  });
  	  //绑定修改文字说明功能
  	  this.$group.on("dblclick",{inthis:this},function(e){
  		var This=e.data.inthis;
  		if(This.$nowType!="group")	return;
  		if(!e)e=window.event;
  		if(e.target.tagName!="LABEL")	return false;
  		var oldTxt=e.target.innerHTML;
  		var p=e.target.parentNode;
  		var x=parseInt(p.style.left,10)+18,y=parseInt(p.style.top,10)+1;
  		var t=getElCoordinate(This.$workArea[0]);
  		This.$textArea.val(oldTxt).css({display:"block",width:100,height:14,
  			left:t.left+x-This.$workArea[0].parentNode.scrollLeft,
  			top:t.top+y-This.$workArea[0].parentNode.scrollTop}).data("id",p.id).focus();
  		This.$workArea.parent().one("mousedown",function(e){
  			if(e.button==2)return false;
  			if(This.$textArea.css("display")=="block"){
  				This.setName(This.$textArea.data("id"),This.$textArea.val(),"area");
  				This.$textArea.val("").removeData("id").hide();
  			}
  		});
  		return false;
  	  });
  	  //绑定点击事件
  	  this.$group.mouseup({inthis:this},function(e){
  	  
  		var This=e.data.inthis;
  		if(This.$nowType!="group")	return;
  		if(!e)e=window.event;
  		switch($(e.target).attr("class")){
  			case "rs_close":	This.delArea(e.target.parentNode.parentNode.id);return false;//删除该分组区域
  			case "bg":	return;
  		}
  		switch(e.target.tagName){
  			case "LABEL":	return false;
  			case "I"://绑定变色功能
  			var id=e.target.parentNode.id;
  			switch(This.$areaData[id].color){
  				case "red":	This.setAreaColor(id,"yellow");break;
  				case "yellow":	This.setAreaColor(id,"blue");break;
  				case "blue":	This.setAreaColor(id,"green");break;
  				case "green":	This.setAreaColor(id,"red");break;
  			}
  			return false;
  		}
  		if(e.data.inthis.$ghost.css("display")=="none"){
        var X,Y;
        var ev=mousePosition(e),t=getElCoordinate(this);
        X=ev.x-t.left+this.parentNode.parentNode.scrollLeft-1;
        Y=ev.y-t.top+this.parentNode.parentNode.scrollTop-1;
        var color=["red","yellow","blue","green"];
        e.data.inthis.addArea(e.data.inthis.$id+"_area_"+e.data.inthis.$max,{name:"area_"+e.data.inthis.$max,left:X,top:Y,color:color[e.data.inthis.$max%4],width:200,height:100});
        e.data.inthis.$max++;
        return false;
  		}
  	  });
  	},
  	//初始化用来改变连线的连接端点的两个小方块的操作事件
  	initLinePointsChg:function(){
  		this.$mpFrom.on("mousedown",{inthis:this},function(e){
  			var This=e.data.inthis;
  			This.switchToolBtn("cursor");
  			var ps=This.$mpFrom.data("p").split(",");
  			var pe=This.$mpTo.data("p").split(",");
  			$(this).hide();
  			This.$workArea.data("lineEnd",{"x":pe[0],"y":pe[1],"id":This.$lineData[This.$lineOper.data("tid")].to}).css("cursor","crosshair");
  			var line=GooFlow.prototype.drawLine("GooFlow_tmp_line",[ps[0],ps[1]],[pe[0],pe[1]],true,true);
  			This.$draw.appendChild(line);
  			return false;
  	  });
  		this.$mpTo.on("mousedown",{inthis:this},function(e){
  			var This=e.data.inthis;
  			This.switchToolBtn("cursor");
  			var ps=This.$mpFrom.data("p").split(",");
  			var pe=This.$mpTo.data("p").split(",");
  			$(this).hide();
  			This.$workArea.data("lineStart",{"x":ps[0],"y":ps[1],"id":This.$lineData[This.$lineOper.data("tid")].from}).css("cursor","crosshair");
  			var line=GooFlow.prototype.drawLine("GooFlow_tmp_line",[ps[0],ps[1]],[pe[0],pe[1]],true,true);
  			This.$draw.appendChild(line);
  			return false;
  	  });
  	},
  	//每一种类型结点及其按钮的说明文字
  	setNodeRemarks:function(remark){
      if(this.$tool==null)  return;
  		this.$tool.children("a").each(function(){
  			this.title=remark[$(this).attr("id").split("btn_")[1]];
  		});
  		this.$nodeRemark=remark;
  	},
  	
  	//切换左边工具栏按钮,传参TYPE表示切换成哪种类型的按钮
  	switchToolBtn:function(type){
  		this.$tool.children("#"+this.$id+"_btn_"+this.$nowType.split(" ")[0]).attr("class","GooFlow_tool_btn");
  		if(this.$nowType=="group"){
  			this.$workArea.prepend(this.$group);
  			for(var key in this.$areaDom)	this.$areaDom[key].addClass("lock").children("div:eq(1)").css("display","none");
  		}
  		this.$nowType=type;
  		this.$tool.children("#"+this.$id+"_btn_"+type.split(" ")[0]).attr("class","GooFlow_tool_btndown");
  		if(this.$nowType=="group"){
  			this.blurItem();
  			this.$workArea.append(this.$group);
  			for(var key in this.$areaDom)	this.$areaDom[key].removeClass("lock").children("div:eq(1)").css("display","");
  		}else if(this.$nowType=="direct"){
        this.blurItem();
  		}
  		if(this.$textArea.css("display")=="none")	this.$textArea.removeData("id").val("").hide();
  	},
  	//增加一个流程结点,传参为一个JSON,有id,name,top,left,width,height,type(结点类型)等属性
  	addNode:function(id,json){
  		if(this.onItemAdd!=null&&!this.onItemAdd(id,"node",json))return;
  		if(this.$undoStack&&this.$editable){
  			this.pushOper("delNode",[id]);
  		}
  		var mark=json.marked? " item_mark":"";
  		if(json.type.indexOf(" round")<0){
  			if(!json.width||json.width<100)json.width=100;
  			if(!json.height||json.height<24)json.height=24;
  			if(!json.top||json.top<0)json.top=0;
  			if(!json.left||json.left<0)json.left=0;
  			//如果节点部分超出画布
  			if((json.width+json.left)>this.$workArea.width()){
  				json.left = this.$workArea.width()-json.width;
  			}
  			if((json.height+json.top)>this.$workArea.height()){
  				json.top = this.$workArea.height()-json.height;
  			}
  			var hack=0;
  			if(navigator.userAgent.indexOf("8.0")!=-1)	hack=2;
  			this.$nodeDom[id]=$("<div class='GooFlow_item"+mark+"' id='"+id+"' style='top:"+json.top+"px;left:"+json.left+"px'><table cellspacing='1' style='width:"+(json.width-2)+"px;height:"+(json.height-2)+"px;'><tr><td class='ico'><i class='ico_"+json.type+"'></i></td><td>"+json.name+"</td></tr></table><div style='display:none'><div class='rs_bottom'></div><div class='rs_right'></div><div class='rs_rb'></div><div class='rs_close'></div></div></div>");
  		}
  		else{
  			json.width=24;json.height=24;
  			//如果节点部分超出画布
  			if((json.width+json.left)>this.$workArea.width()){
  				json.left = this.$workArea.width()-json.width;
  			}
  			if((json.height+json.top)>this.$workArea.height()){
  				json.top = this.$workArea.height()-json.height;
  			}
  			this.$nodeDom[id]=$("<div class='GooFlow_item item_round"+mark+"' id='"+id+"' style='top:"+json.top+"px;left:"+json.left+"px'><table cellspacing='0'><tr><td class='ico'><i class='ico_"+json.type+"'></i></td></tr></table><div  style='display:none'><div class='rs_close'></div></div><div class='span'>"+json.name+"</div></div>");
  			/*$("a[type='start round']").addClass('no');
  			$("a[type='task']").addClass('ac')*/
  		}
  		if(GooFlow.prototype.color.node){
        if(json.type.indexOf(" mix")>-1){
          this.$nodeDom[id].css({"background-color":GooFlow.prototype.color.mix,"border-color":GooFlow.prototype.color.mix});
        }else{
          this.$nodeDom[id].css({"background-color":GooFlow.prototype.color.node,"border-color":GooFlow.prototype.color.node});
        }
        if(mark&&GooFlow.prototype.color.mark){
          this.$nodeDom[id].css({"border-color":GooFlow.prototype.color.mark});
        }
      }
  		if(json.type.indexOf(" mix")>-1){
         this.$nodeDom[id].addClass("item_mix");
  		}
  		
  		var ua=navigator.userAgent.toLowerCase();
  		if(ua.indexOf('msie')!=-1 && ua.indexOf('8.0')!=-1)
  			this.$nodeDom[id].css("filter","progid:DXImageTransform.Microsoft.Shadow(color=#94AAC2,direction=135,strength=2)");
  		this.$workArea.append(this.$nodeDom[id]);
  		this.$nodeData[id]=json;
  		++this.$nodeCount;
  		if(this.$editable){
  			this.$nodeData[id].alt=true;
  			if(this.$deletedItem[id])	delete this.$deletedItem[id];//在回退删除操作时,去掉该元素的删除记录
  		}
  	},
  	initWorkForNode:function(){
  		//绑定点击事件
  		this.$workArea.delegate(".GooFlow_item","click",{inthis:this},function(e){
  			e.data.inthis.focusItem(this.id,true);
  			$(this).removeClass("item_mark");
  		});
  		//绑定用鼠标移动事件
  		this.$workArea.delegate(".ico","mousedown",{inthis:this},function(e){
  			if(!e)e=window.event;
  			if(e.button==2)return false;
  			var This=e.data.inthis;
  			if(This.$nowType=="direct")	return;
  			var Dom=$(this).parents(".GooFlow_item");
  			var id=Dom.attr("id");
  			This.focusItem(id,true);
  			var hack=1;
  			if(navigator.userAgent.indexOf("8.0")!=-1)	hack=0;
  			var ev=mousePosition(e),t=getElCoordinate(This.$workArea[0]);
  			
  			Dom.children("table").clone().prependTo(This.$ghost);
  			var X,Y;
  			X=ev.x-t.left+This.$workArea[0].parentNode.scrollLeft;
  			Y=ev.y-t.top+This.$workArea[0].parentNode.scrollTop;
  			var vX=X-This.$nodeData[id].left,vY=Y-This.$nodeData[id].top;
  			var isMove=false;
  			document.onmousemove=function(e){
  				if(!e)e=window.event;
  				var ev=mousePosition(e);
  				if(X==ev.x-vX&&Y==ev.y-vY)	return false;
  				X=ev.x-vX;Y=ev.y-vY;
  				
  				if(isMove&&This.$ghost.css("display")=="none"){
  					This.$ghost.css({display:"block",
  						width:This.$nodeData[id].width-2+"px", height:This.$nodeData[id].height-2+"px",
  						top:This.$nodeData[id].top+t.top-This.$workArea[0].parentNode.scrollTop+hack+"px",
  						left:This.$nodeData[id].left+t.left-This.$workArea[0].parentNode.scrollLeft+hack+"px",cursor:"move"
  					});
  				}
  
  				if(X<t.left-This.$workArea[0].parentNode.scrollLeft)
  					X=t.left-This.$workArea[0].parentNode.scrollLeft;
  				else if(X+This.$workArea[0].parentNode.scrollLeft+This.$nodeData[id].width>t.left+This.$workArea.width())
  					X=t.left+This.$workArea.width()-This.$workArea[0].parentNode.scrollLeft-This.$nodeData[id].width;
  				if(Y<t.top-This.$workArea[0].parentNode.scrollTop)
  					Y=t.top-This.$workArea[0].parentNode.scrollTop;
  				else if(Y+This.$workArea[0].parentNode.scrollTop+This.$nodeData[id].height>t.top+This.$workArea.height())
  					Y=t.top+This.$workArea.height()-This.$workArea[0].parentNode.scrollTop-This.$nodeData[id].height;
  				This.$ghost.css({left:X+hack+"px",top:Y+hack+"px"});
  				isMove=true;
  			}
  			document.onmouseup=function(e){
  				if(isMove)This.moveNode(id,X+This.$workArea[0].parentNode.scrollLeft-t.left,Y+This.$workArea[0].parentNode.scrollTop-t.top);
  				This.$ghost.empty().hide();
  				document.onmousemove=null;
  				document.onmouseup=null;
  			}
  		});
  		if(!this.$editable)	return;
  		//绑定鼠标覆盖/移出事件
  		this.$workArea.delegate(".GooFlow_item","mouseenter",{inthis:this},function(e){
  			if(e.data.inthis.$nowType!="direct"&&!document.getElementById("GooFlow_tmp_line"))	return;
  			$(this).addClass("item_mark").addClass("crosshair").css("border-color",GooFlow.prototype.color.mark||"#ff3300");
  		});
  		this.$workArea.delegate(".GooFlow_item","mouseleave",{inthis:this},function(e){
  			if(e.data.inthis.$nowType!="direct"&&!document.getElementById("GooFlow_tmp_line"))	return;
  			$(this).removeClass("item_mark").removeClass("crosshair");
  			if(this.id==e.data.inthis.$focus){
          $(this).css("border-color",GooFlow.prototype.color.line||"#3892D3");
  			}else{
          $(this).css("border-color",GooFlow.prototype.color.node||"#A1DCEB");
  			}
  		});
  		//绑定连线时确定初始点
  		this.$workArea.delegate(".GooFlow_item","mousedown",{inthis:this},function(e){
  			if(e.button==2)return false;
  			var This=e.data.inthis;
  			if(This.$nowType!="direct")	return;
  			var ev=mousePosition(e),t=getElCoordinate(This.$workArea[0]);
  			var X,Y;
  			X=ev.x-t.left+This.$workArea[0].parentNode.scrollLeft;
  			Y=ev.y-t.top+This.$workArea[0].parentNode.scrollTop;
  			This.$workArea.data("lineStart",{"x":X,"y":Y,"id":this.id}).css("cursor","crosshair");
  			var line=GooFlow.prototype.drawLine("GooFlow_tmp_line",[X,Y],[X,Y],true,true);
  			This.$draw.appendChild(line);
  		});
  		//绑定连线时确定结束点
  		this.$workArea.delegate(".GooFlow_item","mouseup",{inthis:this},function(e){
  			var This=e.data.inthis;
  			if(This.$nowType!="direct"&&!This.$mpTo.data("p"))	return;
  			var lineStart=This.$workArea.data("lineStart");
  			var lineEnd=This.$workArea.data("lineEnd");
  			if(lineStart&&!This.$mpTo.data("p")){
  				This.addLine(This.$id+"_line_"+This.$max,{from:lineStart.id,to:this.id,name:""});
  				This.$max++;
  			}
  			else{
  				if(lineStart){
  					This.moveLinePoints(This.$focus,lineStart.id,this.id);
  				}else if(lineEnd){
  					This.moveLinePoints(This.$focus,this.id,lineEnd.id);
  				}
  				if(!This.$nodeData[this.id].marked){
            $(this).removeClass("item_mark");
            if(this.id!=This.$focus){
              $(this).css("border-color",GooFlow.prototype.color.node);
            }
            else{
              $(this).css("border-color",GooFlow.prototype.color.line);
            }
  				}
  			}
  		});
  		//绑定双击编辑事件
  		this.$workArea.delegate(".GooFlow_item > .span","dblclick",{inthis:this},function(e){
  			var oldTxt=this.innerHTML;
  			var This=e.data.inthis;
  			var id=this.parentNode.id;
  			var t=getElCoordinate(This.$workArea[0]);
  			This.$textArea.val(oldTxt).css({display:"block",height:$(this).height(),width:100,
  				left:t.left+This.$nodeData[id].left-This.$workArea[0].parentNode.scrollLeft-24,
  				top:t.top+This.$nodeData[id].top-This.$workArea[0].parentNode.scrollTop+26})
  				.data("id",This.$focus).focus();
  			This.$workArea.parent().one("mousedown",function(e){
  				if(e.button==2)return false;
  				This.setName(This.$textArea.data("id"),This.$textArea.val(),"node");
  				This.$textArea.val("").removeData("id").hide();
  			});
  		});
  		this.$workArea.delegate(".ico + td","dblclick",{inthis:this},function(e){
  			var oldTxt=this.innerHTML;
  			var This=e.data.inthis;
  			var id=$(this).parents(".GooFlow_item").attr("id");
  			var t=getElCoordinate(This.$workArea[0]);
  			This.$textArea.val(oldTxt).css({display:"block",width:$(this).width()+24,height:$(this).height(),
  				left:t.left+24+This.$nodeData[id].left-This.$workArea[0].parentNode.scrollLeft,
  				top:t.top+2+This.$nodeData[id].top-This.$workArea[0].parentNode.scrollTop})
  				.data("id",This.$focus).focus();
  			This.$workArea.parent().one("mousedown",function(e){
  				if(e.button==2)return false;
  				This.setName(This.$textArea.data("id"),This.$textArea.val(),"node");
  				This.$textArea.val("").removeData("id").hide();
  			});
  		});
  		//绑定结点的删除功能
  		this.$workArea.delegate(".rs_close","click",{inthis:this},function(e){
  			if(!e)e=window.event;
  			e.data.inthis.delNode(e.data.inthis.$focus);
  			return false;
  		});
  		//绑定结点的RESIZE功能
  		this.$workArea.delegate(".GooFlow_item > div > div[class!=rs_close]","mousedown",{inthis:this},function(e){
  			if(!e)e=window.event;
  			if(e.button==2)return false;
  			var cursor=$(this).css("cursor");
  			if(cursor=="pointer"){return;}
  			var This=e.data.inthis;
  			var id=This.$focus;
  			This.switchToolBtn("cursor");
  			e.cancelBubble = true;
  			e.stopPropagation();
  			var hack=1;
  			if(navigator.userAgent.indexOf("8.0")!=-1)	hack=0;
  			var ev=mousePosition(e),t=getElCoordinate(This.$workArea[0]);
  			This.$ghost.css({display:"block",
  				width:This.$nodeData[id].width-2+"px", height:This.$nodeData[id].height-2+"px",
  				top:This.$nodeData[id].top+t.top-This.$workArea[0].parentNode.scrollTop+hack+"px",
  				left:This.$nodeData[id].left+t.left-This.$workArea[0].parentNode.scrollLeft+hack+"px",cursor:cursor
  			});
  			var X,Y;
  			X=ev.x-t.left+This.$workArea[0].parentNode.scrollLeft;
  			Y=ev.y-t.top+This.$workArea[0].parentNode.scrollTop;
  			var vX=(This.$nodeData[id].left+This.$nodeData[id].width)-X;
  			var vY=(This.$nodeData[id].top+This.$nodeData[id].height)-Y;
  			var isMove=false;
  			This.$ghost.css("cursor",cursor);
  			document.onmousemove=function(e){
  				if(!e)e=window.event;
  				var ev=mousePosition(e);
  				X=ev.x-t.left+This.$workArea[0].parentNode.scrollLeft-This.$nodeData[id].left+vX;
  				Y=ev.y-t.top+This.$workArea[0].parentNode.scrollTop-This.$nodeData[id].top+vY;
  				if(X<100)	X=100;
  				if(Y<24)	Y=24;
  				isMove=true;
  				switch(cursor){
  					case "nw-resize":This.$ghost.css({width:X-2+"px",height:Y-2+"px"});break;
  					case "w-resize":This.$ghost.css({width:X-2+"px"});break;
  					case "n-resize":This.$ghost.css({height:Y-2+"px"});break;
  				}
  			}
  			document.onmouseup=function(e){
  				This.$ghost.hide();
  				if(!isMove)return;
  				if(!e)e=window.event;
  				This.resizeNode(id,This.$ghost.outerWidth(),This.$ghost.outerHeight());
  				document.onmousemove=null;
  				document.onmouseup=null;
  	  		}
  		});
  	},
  	//获取结点/连线/分组区域的详细信息
  	getItemInfo:function(id,type){
  		switch(type){
  			case "node":	return this.$nodeData[id]||null;
  			case "line":	return this.$lineData[id]||null;
  			case "area":	return this.$areaData[id]||null;
  		}
  	},
  	//取消所有结点/连线被选定的状态
  	blurItem:function(){
  		if(this.$focus!=""){
  			var jq=$("#"+this.$focus);
  			if(jq.prop("tagName")=="DIV"){
  				if(this.onItemBlur!=null&&!this.onItemBlur(this.$focus,"node"))	return false;
  				jq.removeClass("item_focus").children("div:eq(0)").css("display","none");
  				if(GooFlow.prototype.color.line){
            if(this.$nodeData[this.$focus].marked){
              jq.css("border-color",GooFlow.prototype.color.mark||"#ff3300");
            }
            else{
              jq.css("border-color",GooFlow.prototype.color.node||"#A1DCEB");
            }
  				}
  			}
  			else{
  				if(this.onItemBlur!=null&&!this.onItemBlur(this.$focus,"line"))	return false;
  				if(GooFlow.prototype.useSVG!=""){
  					if(!this.$lineData[this.$focus].marked){
  						jq[0].childNodes[1].setAttribute("stroke",GooFlow.prototype.color.line||"#3892D3");
  						jq[0].childNodes[1].setAttribute("marker-end","url(#arrow1)");
  					}
  				}
  				else{
  					if(!this.$lineData[this.$focus].marked)	jq[0].strokeColor=GooFlow.prototype.color.line||"#3892D3";
  				}
  				this.$lineMove.hide().removeData("type").removeData("tid");
  				if(this.$editable){
  						this.$lineOper.hide().removeData("tid");
  						this.$mpFrom.hide().removeData("p");
  						this.$mpTo.hide().removeData("p");
  				}
  			}
  		}
  		this.$focus="";
  		return true;
  	},
  	//选定某个结点/转换线 bool:TRUE决定了要触发选中事件，FALSE则不触发选中事件，多用在程序内部调用。
  	focusItem:function(id,bool){
  		var jq=$("#"+id);
  		if(jq.length==0)	return;
  		if(!this.blurItem())	return;//先执行"取消选中",如果返回FLASE,则也会阻止选定事件继续进行.
  		if(jq.prop("tagName")=="DIV"){
  			if(bool&&this.onItemFocus!=null&&!this.onItemFocus(id,"node"))	return;
  			jq.addClass("item_focus");
  			if(GooFlow.prototype.color.line){
          jq.css("border-color",GooFlow.prototype.color.line);
  			}
  			if(this.$editable)jq.children("div:eq(0)").css("display","block");
  			this.$workArea.append(jq);
  		}
  		else{//如果是连接线
  			if(this.onItemFocus!=null&&!this.onItemFocus(id,"line"))	return;
  			if(GooFlow.prototype.useSVG!=""){
  				jq[0].childNodes[1].setAttribute("stroke",GooFlow.prototype.color.mark||"#ff3300");
  				jq[0].childNodes[1].setAttribute("marker-end","url(#arrow2)");
  			}
  			else	jq[0].strokeColor=GooFlow.prototype.color.mark||"#ff3300";
  			if(!this.$editable)	return;
  			var x,y,from,to,n;
  			if(GooFlow.prototype.useSVG!=""){
  				from=jq.attr("from").split(",");
  				to=jq.attr("to").split(",");
  				n=[from[0],from[1],to[0],to[1]];
  			}else{
  				n=jq[0].getAttribute("fromTo").split(",");
  				from=[n[0],n[1]];
  				to=[n[2],n[3]];
  			}
  			from[0]=parseInt(from[0],10);
  			from[1]=parseInt(from[1],10);
  			to[0]=parseInt(to[0],10);
  			to[1]=parseInt(to[1],10);
  			//var t=getElCoordinate(this.$workArea[0]);
  			if(this.$lineData[id].type=="lr"){
  				from[0]=this.$lineData[id].M;
  				to[0]=from[0];
  				
  				this.$lineMove.css({
  					width:"5px",height:(to[1]-from[1])*(to[1]>from[1]? 1:-1)+"px",
  					left:from[0]-3+"px",
  					top:(to[1]>from[1]? from[1]:to[1])+1+"px",
  					cursor:"e-resize",display:"block"
  				}).data({"type":"lr","tid":id});
  			}
  			else if(this.$lineData[id].type=="tb"){
  				from[1]=this.$lineData[id].M;
  				to[1]=from[1];
  				this.$lineMove.css({
  					width:(to[0]-from[0])*(to[0]>from[0]? 1:-1)+"px",height:"5px",
  					left:(to[0]>from[0]? from[0]:to[0])+1+"px",
  					top:from[1]-3+"px",
  					cursor:"s-resize",display:"block"
  				}).data({"type":"tb","tid":id});
  			}
  			x=(from[0]+to[0])/2-35;
  			y=(from[1]+to[1])/2+6;
  			this.$lineOper.css({display:"block",left:x+"px",top:y+"px"}).data("tid",id);
  			if(this.$editable){
  				this.$mpFrom.css({display:"block",left:n[0]-4+"px",top:n[1]-4+"px"}).data("p",n[0]+","+n[1]);
  				this.$mpTo.css({display:"block",left:n[2]-4+"px",top:n[3]-4+"px"}).data("p",n[2]+","+n[3]);
  			}
  			this.$draw.appendChild(jq[0]);
  		}
  		this.$focus=id;
  		this.switchToolBtn("cursor");
  	},
  	//移动结点到一个新的位置
  	moveNode:function(id,left,top){
  		if(!this.$nodeData[id])	return;
  		if(this.onItemMove!=null&&!this.onItemMove(id,"node",left,top))	return;
  		if(this.$undoStack){
  			var paras=[id,this.$nodeData[id].left,this.$nodeData[id].top];
  			this.pushOper("moveNode",paras);
  		}
  		if(left<0)	left=0;
  		if(top<0)	top=0;
  		$("#"+id).css({left:left+"px",top:top+"px"});
  		this.$nodeData[id].left=left;
  		this.$nodeData[id].top=top;
  		//重画转换线
  		this.resetLines(id,this.$nodeData[id]);
  		if(this.$editable){
  			this.$nodeData[id].alt=true;
  		}
  	},
  	//设置结点/连线/分组区域的文字信息
  	setName:function(id,name,type){
  		var oldName;
  		if(type=="node"){//如果是结点
  			if(!this.$nodeData[id])	return;
  			if(this.$nodeData[id].name==name)	return;
  			if(this.onItemRename!=null&&!this.onItemRename(id,name,"node"))	return;
  			oldName=this.$nodeData[id].name;
  			this.$nodeData[id].name=name;
  			if(this.$nodeData[id].type.indexOf("round")>1){
  				this.$nodeDom[id].children(".span").text(name);
  			}
  			else{
  				this.$nodeDom[id].find("td:eq(1)").text(name);
  				var hack=0;
  				if(navigator.userAgent.indexOf("8.0")!=-1)	hack=2;
  				var width=this.$nodeDom[id].outerWidth();
  				var height=this.$nodeDom[id].outerHeight();
  				this.$nodeDom[id].children("table").css({width:width-2+"px",height:height-2+"px"});
  				this.$nodeData[id].width=width;
  				this.$nodeData[id].height=height;
  			}
  			if(this.$editable){
  				this.$nodeData[id].alt=true;
  			}
  			//重画转换线
  			this.resetLines(id,this.$nodeData[id]);
  		}
  		else if(type=="line"){//如果是线
  			if(!this.$lineData[id])	return;
  			if(this.$lineData[id].name==name)	return;
  			if(this.onItemRename!=null&&!this.onItemRename(id,name,"line"))	return;
  			oldName=this.$lineData[id].name;
  			this.$lineData[id].name=name;
  			if(GooFlow.prototype.useSVG!=""){
  				this.$lineDom[id].childNodes[2].textContent=name;
  			}
  			else{
  				this.$lineDom[id].childNodes[1].innerHTML=name;
  				var n=this.$lineDom[id].getAttribute("fromTo").split(",");
  				var x;
  				if(this.$lineData[id].type!="lr"){
  					x=(n[2]-n[0])/2;
  				}
  				else{
  					var Min=n[2]>n[0]? n[0]:n[2];
  					if(Min>this.$lineData[id].M) Min=this.$lineData[id].M;
  					x=this.$lineData[id].M-Min;
  				}
  				if(x<0) x=x*-1;
  				this.$lineDom[id].childNodes[1].style.left=x-this.$lineDom[id].childNodes[1].offsetWidth/2+4+"px";
  			}
  			if(this.$editable){
  				this.$lineData[id].alt=true;
  			}
  		}
  		else if(type=="area"){//如果是分组区域
  			if(!this.$areaData[id])	return;
  			if(this.$areaData[id].name==name)	return;
  			if(this.onItemRename!=null&&!this.onItemRename(id,name,"area"))	return;
  			oldName=this.$areaData[id].name;
  			this.$areaData[id].name=name;
  			this.$areaDom[id].children("label").text(name);
  			if(this.$editable){
  				this.$areaData[id].alt=true;
  			}
  		}
  		if(this.$undoStack){
  			var paras=[id,oldName,type];
  			this.pushOper("setName",paras);
  		}
  	},
  	//设置结点的尺寸,仅支持非开始/结束结点
  	resizeNode:function(id,width,height){
  		if(!this.$nodeData[id])	return;
  		if(this.onItemResize!=null&&!this.onItemResize(id,"node",width,height))	return;
  		if(this.$nodeData[id].type=="start"||this.$nodeData[id].type=="end")return;
  		if(this.$undoStack){
  			var paras=[id,this.$nodeData[id].width,this.$nodeData[id].height];
  			this.pushOper("resizeNode",paras);
  		}
  		var hack=0;
  		if(navigator.userAgent.indexOf("8.0")!=-1)	hack=2;
  		this.$nodeDom[id].children("table").css({width:width-2+"px",height:height-2+"px"});
  		width=this.$nodeDom[id].outerWidth()-hack;
  		height=this.$nodeDom[id].outerHeight()-hack;
  		this.$nodeDom[id].children("table").css({width:width-2+"px",height:height-2+"px"});
  		this.$nodeData[id].width=width;
  		this.$nodeData[id].height=height;
  		if(this.$editable){
  			this.$nodeData[id].alt=true;
  		}
  		//重画转换线
  		this.resetLines(id,this.$nodeData[id]);
  	},
  	//删除结点
  	delNode:function(id){
  		if(!this.$nodeData[id])	return;
  		if(this.onItemDel!=null&&!this.onItemDel(id,"node"))	return;
  		//先删除可能的连线
  		for(var k in this.$lineData){
  			if(this.$lineData[k].from==id||this.$lineData[k].to==id){
  				//this.$draw.removeChild(this.$lineDom[k]);
  				//delete this.$lineData[k];
  				//delete this.$lineDom[k];
  				this.delLine(k);
  			}
  		}
  		//再删除结点本身
  		if(this.$undoStack){
  			var paras=[id,this.$nodeData[id]];
  			this.pushOper("addNode",paras);
  		}
  		delete this.$nodeData[id];
  		this.$nodeDom[id].remove();
  		delete this.$nodeDom[id];
  		--this.$nodeCount;
  		if(this.$focus==id)	this.$focus="";
  
  		if(this.$editable){
  			//在回退新增操作时,如果节点ID以this.$id+"_node_"开头,则表示为本次编辑时新加入的节点,这些节点的删除不用加入到$deletedItem中
  			if(id.indexOf(this.$id+"_node_")<0)
  				this.$deletedItem[id]="node";
  		}
  	},
  	//设置流程图的名称
  	setTitle:function(text){
  		this.$title=text;
  		if(this.$head)	this.$head.children("label").attr("title",text).text(text);
  	},
  	//载入一组数据
  	loadData:function(data){
  		var t=this.$editable;
  		this.$editable=false;
  		if(data.title)	this.setTitle(data.title);
  		if(data.initNum)	this.$max=data.initNum;
  		for(var i in data.nodes)
  			this.addNode(i,data.nodes[i]);
  		for(var j in data.lines)
  			this.addLine(j,data.lines[j]);
  		for(var k in data.areas)
  			this.addArea(k,data.areas[k]);
  		this.$editable=t;
  		this.$deletedItem={};
  	},
  	//用AJAX方式，远程读取一组数据
  	//参数para为JSON结构，与JQUERY中$.ajax()方法的传参一样
  	loadDataAjax:function(para){
  		var This=this;
  		$.ajax({
  			type:para.type,
  			url:para.url,
  			dataType:"json",
  			data:para.data,
  			success: function(msg){
  				if(para.dataFilter)	para.dataFilter(msg,"json");
       			This.loadData(msg);
  				if(para.success)	para.success(msg);
     			},
  			error: function(XMLHttpRequest, textStatus, errorThrown){
  				if(para.error)	para.error(textStatus,errorThrown);
  			}
  		})
  	},
  	//把画好的整个流程图导出到一个变量中(其实也可以直接访问GooFlow对象的$nodeData,$lineData,$areaData这三个JSON属性)
  	exportData:function(){
  		var ret={title:this.$title,nodes:this.$nodeData,lines:this.$lineData,areas:this.$areaData,initNum:this.$max};
  		for(var k1 in ret.nodes){
  			if(!ret.nodes[k1].marked){
  				delete ret.nodes[k1]["marked"];
  			}
  		}
  		for(var k2 in ret.lines){
  			if(!ret.lines[k2].marked){
  				delete ret.lines[k2]["marked"];
  			}
  		}
  		return ret;
  	},
  	//只把本次编辑流程图中作了变更(包括增删改)的元素导出到一个变量中,以方便用户每次编辑载入的流程图后只获取变更过的数据
  	exportAlter:function(){
  		var ret={nodes:{},lines:{},areas:{}};
  		for(var k1 in this.$nodeData){
  			if(this.$nodeData[k1].alt){
  				ret.nodes[k1]=this.$nodeData[k1];
  			}
  		}
  		for(var k2 in this.$lineData){
  			if(this.$lineData[k2].alt){
  				ret.lines[k2]=this.$lineData[k2];
  			}
  		}
  		for(var k3 in this.$areaData){
  			if(this.$areaData[k3].alt){
  				ret.areas[k3]=this.$areaData[k3];
  			}
  		}
  		ret.deletedItem=this.$deletedItem;
  		return ret;
  	},
  	//变更元素的ID,一般用于快速保存后,将后台返回新元素的ID更新到页面中;type为元素类型(节点,连线,区块)
  	transNewId:function(oldId,newId,type){
  		var tmp;
  		switch(type){
  			case "node":
  			if(this.$nodeData[oldId]){
  				tmp=this.$nodeData[oldId];
  				delete this.$nodeData[oldId];
  				this.$nodeData[newId]=tmp;
  				tmp=this.$nodeDom[oldId].attr("id",newId);
  				delete this.$nodeDom[oldId];
  				this.$nodeDom[newId]=tmp;
  			}
  			break;
  			case "line":
  			if(this.$lineData[oldId]){
  				tmp=this.$lineData[oldId];
  				delete this.$lineData[oldId];
  				this.$lineData[newId]=tmp;
  				tmp=this.$lineDom[oldId].attr("id",newId);
  				delete this.$lineDom[oldId];
  				this.$lineDom[newId]=tmp;
  			}
  			break;
  			case "area":
  			if(this.$areaData[oldId]){
  				tmp=this.$areaData[oldId];
  				delete this.$areaData[oldId];
  				this.$areaData[newId]=tmp;
  				tmp=this.$areaDom[oldId].attr("id",newId);
  				delete this.$areaDom[oldId];
  				this.$areaDom[newId]=tmp;
  			}
  			break;
  		}
  	},
  	//清空工作区及已载入的数据
  	clearData:function(){
  		for(var key in this.$nodeData){
  			this.delNode(key);
  		}
  		for(var key in this.$lineData){
  			this.delLine(key);
  		}
  		for(var key in this.$areaData){
  			this.delArea(key);
  		}
  		this.$deletedItem={};
  	},
  	//销毁自己
  	destrory:function(){
  		this.$bgDiv.empty();
  		this.$lineData=null;
  		this.$nodeData=null;
  		this.$lineDom=null;
  		this.$nodeDom=null;
  		this.$areaDom=null;
  		this.$areaData=null;
  		this.$nodeCount=0;
  		this.$areaCount=0;
  		this.$areaCount=0;
  		this.$deletedItem={};
  	},
  ///////////以下为有关画线的方法
  	//绘制一条箭头线，并返回线的DOM
  	drawLine:function(id,sp,ep,mark,dash){
  		var line;
  		if(GooFlow.prototype.useSVG!=""){
  			line=document.createElementNS("http://www.w3.org/2000/svg","g");
  			var hi=document.createElementNS("http://www.w3.org/2000/svg","path");
  			var path=document.createElementNS("http://www.w3.org/2000/svg","path");
  
  			if(id!="")	line.setAttribute("id",id);
  			line.setAttribute("from",sp[0]+","+sp[1]);
  			line.setAttribute("to",ep[0]+","+ep[1]);
  			hi.setAttribute("visibility","hidden");
  			hi.setAttribute("stroke-width",9);
  			hi.setAttribute("fill","none");
  			hi.setAttribute("stroke","white");
  			hi.setAttribute("d","M "+sp[0]+" "+sp[1]+" L "+ep[0]+" "+ep[1]);
  			hi.setAttribute("pointer-events","stroke");
  			path.setAttribute("d","M "+sp[0]+" "+sp[1]+" L "+ep[0]+" "+ep[1]);
  			path.setAttribute("stroke-width",1.4);
  			path.setAttribute("stroke-linecap","round");
  			path.setAttribute("fill","none");
  			if(dash)	path.setAttribute("style", "stroke-dasharray:6,5");
  			if(mark){
  				path.setAttribute("stroke",GooFlow.prototype.color.mark||"#ff3300");
  				path.setAttribute("marker-end","url(#arrow2)");
  			}
  			else{
  				path.setAttribute("stroke",GooFlow.prototype.color.line||"#3892D3");
  				path.setAttribute("marker-end","url(#arrow1)");
  			}
  			line.appendChild(hi);
  			line.appendChild(path);
  			line.style.cursor="crosshair";
  			if(id!=""&&id!="GooFlow_tmp_line"){
  				var text=document.createElementNS("http://www.w3.org/2000/svg","text");
  				text.setAttribute("fill",GooFlow.prototype.color.font||"#333");
  				line.appendChild(text);
  				var x=(ep[0]+sp[0])/2;
  				var y=(ep[1]+sp[1])/2;
  				text.setAttribute("text-anchor","middle");
  				text.setAttribute("x",x);
  				text.setAttribute("y",y);
  				line.style.cursor="pointer";
  				text.style.cursor="text";
  			}
  		}else{
  			line=document.createElement("v:polyline");
  			if(id!="")	line.id=id;
  			//line.style.position="absolute";
  			line.points.value=sp[0]+","+sp[1]+" "+ep[0]+","+ep[1];
  			line.setAttribute("fromTo",sp[0]+","+sp[1]+","+ep[0]+","+ep[1]);
  			line.strokeWeight="1.2";
  			line.stroke.EndArrow="Block";
  			line.style.cursor="crosshair";
  			if(id!=""&&id!="GooFlow_tmp_line"){
  				var text=document.createElement("div");
  				//text.innerHTML=id;
  				line.appendChild(text);
  				var x=(ep[0]-sp[0])/2;
  				var y=(ep[1]-sp[1])/2;
  				if(x<0) x=x*-1;
  				if(y<0) y=y*-1;
  				text.style.left=x+"px";
  				text.style.top=y-6+"px";
  				line.style.cursor="pointer";
  			}
  			if(dash)	line.stroke.dashstyle="Dash";
  			if(mark)	line.strokeColor=GooFlow.prototype.color.mark||"#ff3300";
  			else	line.strokeColor=GooFlow.prototype.color.line||"#3892D3";
  			line.fillColor=GooFlow.prototype.color.line||"#3892D3";
  		}
  		return line;
  	},
  	//画一条只有两个中点的折线
  	drawPoly:function(id,sp,m1,m2,ep,mark){
  		var poly,strPath;
  		if(GooFlow.prototype.useSVG!=""){
  			poly=document.createElementNS("http://www.w3.org/2000/svg","g");
  			var hi=document.createElementNS("http://www.w3.org/2000/svg","path");
  			var path=document.createElementNS("http://www.w3.org/2000/svg","path");
  			if(id!="")	poly.setAttribute("id",id);
  			poly.setAttribute("from",sp[0]+","+sp[1]);
  			poly.setAttribute("to",ep[0]+","+ep[1]);
  			hi.setAttribute("visibility","hidden");
  			hi.setAttribute("stroke-width",9);
  			hi.setAttribute("fill","none");
  			hi.setAttribute("stroke","white");
  			strPath="M "+sp[0]+" "+sp[1];
  			if(m1[0]!=sp[0]||m1[1]!=sp[1])
  				strPath+=" L "+m1[0]+" "+m1[1];
  			if(m2[0]!=ep[0]||m2[1]!=ep[1])
  				strPath+=" L "+m2[0]+" "+m2[1];
  			strPath+=" L "+ep[0]+" "+ep[1];
  			hi.setAttribute("d",strPath);
  			hi.setAttribute("pointer-events","stroke");
  			path.setAttribute("d",strPath);
  			path.setAttribute("stroke-width",1.4);
  			path.setAttribute("stroke-linecap","round");
  			path.setAttribute("fill","none");
  			if(mark){
  				path.setAttribute("stroke",GooFlow.prototype.color.mark||"#ff3300");
  				path.setAttribute("marker-end","url(#arrow2)");
  			}
  			else{
  				path.setAttribute("stroke",GooFlow.prototype.color.line||"#3892D3");
  				path.setAttribute("marker-end","url(#arrow1)");
  			}
  			poly.appendChild(hi);
  			poly.appendChild(path);
  			var text=document.createElementNS("http://www.w3.org/2000/svg","text");
  			text.setAttribute("fill",GooFlow.prototype.color.font||"#333");
  			poly.appendChild(text);
  			var x=(m2[0]+m1[0])/2;
  			var y=(m2[1]+m1[1])/2;
  			text.setAttribute("text-anchor","middle");
  			text.setAttribute("x",x);
  			text.setAttribute("y",y);
  			text.style.cursor="text";
  			poly.style.cursor="pointer";
  		}
  		else{
  			poly=document.createElement("v:Polyline");
  			if(id!="")	poly.id=id;
  			poly.filled="false";
  			strPath=sp[0]+","+sp[1];
  			if(m1[0]!=sp[0]||m1[1]!=sp[1])
  				strPath+=" "+m1[0]+","+m1[1];
  			if(m2[0]!=ep[0]||m2[1]!=ep[1])
  				strPath+=" "+m2[0]+","+m2[1];
  			strPath+=" "+ep[0]+","+ep[1];
  			poly.points.value=strPath;
  			poly.setAttribute("fromTo",sp[0]+","+sp[1]+","+ep[0]+","+ep[1]);
  			poly.strokeWeight="1.2";
  			poly.stroke.EndArrow="Block";
  			var text=document.createElement("div");
  			//text.innerHTML=id;
  			poly.appendChild(text);
  			var x=(m2[0]-m1[0])/2;
  			var y=(m2[1]-m1[1])/2;
  			if(x<0) x=x*-1;
  			if(y<0) y=y*-1;
  			text.style.left=x+"px";
  			text.style.top=y-4+"px";
  			poly.style.cursor="pointer";
  			if(mark)	poly.strokeColor=GooFlow.prototype.color.mark||"#ff3300";
  			else	poly.strokeColor=GooFlow.prototype.color.line||"#3892D3";
  		}
  		return poly;
  	},
  	//计算两个结点间要连直线的话，连线的开始坐标和结束坐标
  	calcStartEnd:function(n1,n2){
  		var X_1,Y_1,X_2,Y_2;
  		//X判断：
  		var x11=n1.left,x12=n1.left+n1.width,x21=n2.left,x22=n2.left+n2.width;
  		//结点2在结点1左边
  		if(x11>=x22){
  			X_1=x11;X_2=x22;
  		}
  		//结点2在结点1右边
  		else if(x12<=x21){
  			X_1=x12;X_2=x21;
  		}
  		//结点2在结点1水平部分重合
  		else if(x11<=x21&&x12>=x21&&x12<=x22){
  			X_1=(x12+x21)/2;X_2=X_1;
  		}
  		else if(x11>=x21&&x12<=x22){
  			X_1=(x11+x12)/2;X_2=X_1;
  		}
  		else if(x21>=x11&&x22<=x12){
  			X_1=(x21+x22)/2;X_2=X_1;
  		}
  		else if(x11<=x22&&x12>=x22){
  			X_1=(x11+x22)/2;X_2=X_1;
  		}
  		
  		//Y判断：
  		var y11=n1.top,y12=n1.top+n1.height,y21=n2.top,y22=n2.top+n2.height;
  		//结点2在结点1上边
  		if(y11>=y22){
  			Y_1=y11;Y_2=y22;
  		}
  		//结点2在结点1下边
  		else if(y12<=y21){
  			Y_1=y12;Y_2=y21;
  		}
  		//结点2在结点1垂直部分重合
  		else if(y11<=y21&&y12>=y21&&y12<=y22){
  			Y_1=(y12+y21)/2;Y_2=Y_1;
  		}
  		else if(y11>=y21&&y12<=y22){
  			Y_1=(y11+y12)/2;Y_2=Y_1;
  		}
  		else if(y21>=y11&&y22<=y12){
  			Y_1=(y21+y22)/2;Y_2=Y_1;
  		}
  		else if(y11<=y22&&y12>=y22){
  			Y_1=(y11+y22)/2;Y_2=Y_1;
  		}
  		return {"start":[X_1,Y_1],"end":[X_2,Y_2]};
  	},
  	//计算两个结点间要连折线的话，连线的所有坐标
  	calcPolyPoints:function(n1,n2,type,M){
  		//开始/结束两个结点的中心
  		var SP={x:n1.left+n1.width/2,y:n1.top+n1.height/2};
  		var EP={x:n2.left+n2.width/2,y:n2.top+n2.height/2};
  		var sp=[],m1=[],m2=[],ep=[];
  		//如果是允许中段可左右移动的折线,则参数M为可移动中段线的X坐标
  		//粗略计算起始点
  		sp=[SP.x,SP.y];
  		ep=[EP.x,EP.y];
  		if(type=="lr"){
  			//粗略计算2个中点
  			m1=[M,SP.y];
  			m2=[M,EP.y];
  			//再具体分析修改开始点和中点1
  			if(m1[0]>n1.left&&m1[0]<n1.left+n1.width){
  				m1[1]=(SP.y>EP.y? n1.top:n1.top+n1.height);
  				sp[0]=m1[0];sp[1]=m1[1];
  			}
  			else{
  				sp[0]=(m1[0]<n1.left? n1.left:n1.left+n1.width)
  			}
  			//再具体分析中点2和结束点
  			if(m2[0]>n2.left&&m2[0]<n2.left+n2.width){
  				m2[1]=(SP.y>EP.y? n2.top+n2.height:n2.top);
  				ep[0]=m2[0];ep[1]=m2[1];
  			}
  			else{
  				ep[0]=(m2[0]<n2.left? n2.left:n2.left+n2.width)
  			}
  		}
  		//如果是允许中段可上下移动的折线,则参数M为可移动中段线的Y坐标
  		else if(type=="tb"){
  			//粗略计算2个中点
  			m1=[SP.x,M];
  			m2=[EP.x,M];
  			//再具体分析修改开始点和中点1
  			if(m1[1]>n1.top&&m1[1]<n1.top+n1.height){
  				m1[0]=(SP.x>EP.x? n1.left:n1.left+n1.width);
  				sp[0]=m1[0];sp[1]=m1[1];
  			}
  			else{
  				sp[1]=(m1[1]<n1.top? n1.top:n1.top+n1.height)
  			}
  			//再具体分析中点2和结束点
  			if(m2[1]>n2.top&&m2[1]<n2.top+n2.height){
  				m2[0]=(SP.x>EP.x? n2.left+n2.width:n2.left);
  				ep[0]=m2[0];ep[1]=m2[1];
  			}
  			else{
  				ep[1]=(m2[1]<n2.top? n2.top:n2.top+n2.height);
  			}
  		}
  		return {start:sp,m1:m1,m2:m2,end:ep};
  	},
  	//初始化折线中段的X/Y坐标,mType='rb'时为X坐标,mType='tb'时为Y坐标
  	getMValue:function(n1,n2,mType){
  		if(mType=="lr"){
  			return (n1.left+n1.width/2+n2.left+n2.width/2)/2;
  		}
  		else if(mType=="tb"){
  			return (n1.top+n1.height/2+n2.top+n2.height/2)/2;
  		}
  	},
  	//原lineData已经设定好的情况下，只在绘图工作区画一条线的页面元素
  	addLineDom:function(id,lineData){
  		var n1=this.$nodeData[lineData.from],n2=this.$nodeData[lineData.to];//获取开始/结束结点的数据
  		if(!n1||!n2)	return;
  		//开始计算线端点坐标
  		var res;
  		if(lineData.type&&lineData.type!="sl")
  			res=GooFlow.prototype.calcPolyPoints(n1,n2,lineData.type,lineData.M);
  		else
  			res=GooFlow.prototype.calcStartEnd(n1,n2);
  		if(!res)	return;
  		
  		if(lineData.type=="sl")
  			this.$lineDom[id]=GooFlow.prototype.drawLine(id,res.start,res.end,lineData.marked);
  		else
  			this.$lineDom[id]=GooFlow.prototype.drawPoly(id,res.start,res.m1,res.m2,res.end,lineData.marked);
  		this.$draw.appendChild(this.$lineDom[id]);
  		if(GooFlow.prototype.useSVG==""){
  			this.$lineDom[id].childNodes[1].innerHTML=lineData.name;
  			if(lineData.type!="sl"){
  				var Min=(res.start[0]>res.end[0]? res.end[0]:res.start[0]);
  				if(Min>res.m2[0])	Min=res.m2[0];
  				if(Min>res.m1[0])	Min=res.m1[0];
  				this.$lineDom[id].childNodes[1].style.left = (res.m2[0]+res.m1[0])/2-Min-this.$lineDom[id].childNodes[1].offsetWidth/2+4;
  				Min=(res.start[1]>res.end[1]? res.end[1]:res.start[1]);
  				if(Min>res.m2[1])	Min=res.m2[1];
  				if(Min>res.m1[1])	Min=res.m1[1];
  				this.$lineDom[id].childNodes[1].style.top = (res.m2[1]+res.m1[1])/2-Min-this.$lineDom[id].childNodes[1].offsetHeight/2;
  			}else
  				this.$lineDom[id].childNodes[1].style.left=
  				((res.end[0]-res.start[0])*(res.end[0]>res.start[0]? 1:-1)-this.$lineDom[id].childNodes[1].offsetWidth)/2+4;
  		}
  		else	this.$lineDom[id].childNodes[2].textContent=lineData.name;
  	},
  	//增加一条线
  	addLine:function(id,json){
  		if(this.onItemAdd!=null&&!this.onItemAdd(id,"line",json))return;
  		if(this.$undoStack&&this.$editable){
  			this.pushOper("delLine",[id]);
  		}
  		if(json.from==json.to)	return;
  		var n1=this.$nodeData[json.from],n2=this.$nodeData[json.to];//获取开始/结束结点的数据
  		if(!n1||!n2)	return;
  		//避免两个节点间不能有一条以上同向接连线
  		for(var k in this.$lineData){
  			if((json.from==this.$lineData[k].from&&json.to==this.$lineData[k].to))
  				return;
  		}
  		//设置$lineData[id]
  		this.$lineData[id]={};
  		if(json.type){
  			this.$lineData[id].type=json.type;
  			this.$lineData[id].M=json.M;
  		}
  		else	this.$lineData[id].type="sl";//默认为直线
  		this.$lineData[id].from=json.from;
  		this.$lineData[id].to=json.to;
  		this.$lineData[id].name=json.name;
  		if(json.marked)	this.$lineData[id].marked=json.marked;
  		else	this.$lineData[id].marked=false;
  		//设置$lineData[id]完毕
  		
  		this.addLineDom(id,this.$lineData[id]);
  		
  		++this.$lineCount;
  		if(this.$editable){
  			this.$lineData[id].alt=true;
  			if(this.$deletedItem[id])	delete this.$deletedItem[id];//在回退删除操作时,去掉该元素的删除记录
  		}
  	},
  	//重构所有连向某个结点的线的显示，传参结构为$nodeData数组的一个单元结构
  	resetLines:function(id,node){
  		for(var i in this.$lineData){
  		  var other=null;//获取结束/开始结点的数据
  		  var res;
  		  if(this.$lineData[i].from==id){//找结束点
  			other=this.$nodeData[this.$lineData[i].to]||null;
  			if(other==null)	continue;
  			if(this.$lineData[i].type=="sl")
  				res=GooFlow.prototype.calcStartEnd(node,other);
  			else
  				res=GooFlow.prototype.calcPolyPoints(node,other,this.$lineData[i].type,this.$lineData[i].M)
  			if(!res)	break;
  		  }
  		  else if(this.$lineData[i].to==id){//找开始点
  			other=this.$nodeData[this.$lineData[i].from]||null;
  			if(other==null)	continue;
  			if(this.$lineData[i].type=="sl")
  				res=GooFlow.prototype.calcStartEnd(other,node);
  			else
  				res=GooFlow.prototype.calcPolyPoints(other,node,this.$lineData[i].type,this.$lineData[i].M);
  			if(!res)	break;
  		  }
  		  if(other==null)	continue;
  		  this.$draw.removeChild(this.$lineDom[i]);
  		  if(this.$lineData[i].type=="sl"){
  		  	this.$lineDom[i]=GooFlow.prototype.drawLine(i,res.start,res.end,this.$lineData[i].marked);
  		  }
  		  else{
  			this.$lineDom[i]=GooFlow.prototype.drawPoly(i,res.start,res.m1,res.m2,res.end,this.$lineData[i].marked);
  		  }
  		  this.$draw.appendChild(this.$lineDom[i]);
  		  if(GooFlow.prototype.useSVG==""){
  			this.$lineDom[i].childNodes[1].innerHTML=this.$lineData[i].name;
  			if(this.$lineData[i].type!="sl"){
  				var Min=(res.start[0]>res.end[0]? res.end[0]:res.start[0]);
  				if(Min>res.m2[0])	Min=res.m2[0];
  				if(Min>res.m1[0])	Min=res.m1[0];
  				this.$lineDom[i].childNodes[1].style.left = (res.m2[0]+res.m1[0])/2-Min-this.$lineDom[i].childNodes[1].offsetWidth/2+4;
  				Min=(res.start[1]>res.end[1]? res.end[1]:res.start[1]);
  				if(Min>res.m2[1])	Min=res.m2[1];
  				if(Min>res.m1[1])	Min=res.m1[1];
  				this.$lineDom[i].childNodes[1].style.top = (res.m2[1]+res.m1[1])/2-Min-this.$lineDom[i].childNodes[1].offsetHeight/2-4;
  			}else
  				this.$lineDom[i].childNodes[1].style.left=
  				((res.end[0]-res.start[0])*(res.end[0]>res.start[0]? 1:-1)-this.$lineDom[i].childNodes[1].offsetWidth)/2+4;
  		  }
  		  else	this.$lineDom[i].childNodes[2].textContent=this.$lineData[i].name;
  		}
  	},
  	//重新设置连线的样式 newType= "sl":直线, "lr":中段可左右移动型折线, "tb":中段可上下移动型折线
  	setLineType:function(id,newType,M){
  		if(!newType||newType==null||newType==""||newType==this.$lineData[id].type)	return false;
  		if(this.onLineSetType!=null&&!this.onLineSetType(id,newType))	return;
  		if(this.$undoStack){
  			var paras=[id,this.$lineData[id].type,this.$lineData[id].M];
  			this.pushOper("setLineType",paras);
  		}
  		var from=this.$lineData[id].from;
  		var to=this.$lineData[id].to;
  		this.$lineData[id].type=newType;
  		var res;
  		//如果是变成折线
  		if(newType!="sl"){
  		  var res=GooFlow.prototype.calcPolyPoints(this.$nodeData[from],this.$nodeData[to],this.$lineData[id].type,this.$lineData[id].M);
  		  if(M){
  		  	this.setLineM(id,M,true);
  		  }else{
  		  	this.setLineM(id,this.getMValue(this.$nodeData[from],this.$nodeData[to],newType),true);
  		  }
  		}
  		//如果是变回直线
  		else{
  		  delete this.$lineData[id].M;
  		  this.$lineMove.hide().removeData("type").removeData("tid");
  		  res=GooFlow.prototype.calcStartEnd(this.$nodeData[from],this.$nodeData[to]);
  		  if(!res)	return;
  		  this.$draw.removeChild(this.$lineDom[id]);
  		  this.$lineDom[id]=GooFlow.prototype.drawLine(id,res.start,res.end,this.$lineData[id].marked||this.$focus==id);
  		  this.$draw.appendChild(this.$lineDom[id]);
  		  if(GooFlow.prototype.useSVG==""){
  		  	this.$lineDom[id].childNodes[1].innerHTML=this.$lineData[id].name;
  			this.$lineDom[id].childNodes[1].style.left=
  			((res.end[0]-res.start[0])*(res.end[0]>res.start[0]? 1:-1)-this.$lineDom[id].childNodes[1].offsetWidth)/2+4;
  		  }
  		  else
  			this.$lineDom[id].childNodes[2].textContent=this.$lineData[id].name;
  		}
  		if(this.$focus==id){
  			this.focusItem(id);
  		}
  		if(this.$editable){
  			this.$lineData[id].alt=true;
  		}
  	},
  	//设置折线中段的X坐标值（可左右移动时）或Y坐标值（可上下移动时）
  	setLineM:function(id,M,noStack){
  		if(!this.$lineData[id]||M<0||!this.$lineData[id].type||this.$lineData[id].type=="sl")	return false;
  		if(this.onLineMove!=null&&!this.onLineMove(id,M))	return false;
  		if(this.$undoStack&&!noStack){
  			var paras=[id,this.$lineData[id].M];
  			this.pushOper("setLineM",paras);
  		}
  		var from=this.$lineData[id].from;
  		var to=this.$lineData[id].to;
  		this.$lineData[id].M=M;
  		var ps=GooFlow.prototype.calcPolyPoints(this.$nodeData[from],this.$nodeData[to],this.$lineData[id].type,this.$lineData[id].M);
  		this.$draw.removeChild(this.$lineDom[id]);
  		this.$lineDom[id]=GooFlow.prototype.drawPoly(id,ps.start,ps.m1,ps.m2,ps.end,this.$lineData[id].marked||this.$focus==id);
  		this.$draw.appendChild(this.$lineDom[id]);
  		if(GooFlow.prototype.useSVG==""){
  			this.$lineDom[id].childNodes[1].innerHTML=this.$lineData[id].name;
  			var Min=(ps.start[0]>ps.end[0]? ps.end[0]:ps.start[0]);
  			if(Min>ps.m2[0])	Min=ps.m2[0];
  			if(Min>ps.m1[0])	Min=ps.m1[0];
  			this.$lineDom[id].childNodes[1].style.left = (ps.m2[0]+ps.m1[0])/2-Min-this.$lineDom[id].childNodes[1].offsetWidth/2+4;
  			Min=(ps.start[1]>ps.end[1]? ps.end[1]:ps.start[1]);
  			if(Min>ps.m2[1])	Min=ps.m2[1];
  			if(Min>ps.m1[1])	Min=ps.m1[1];
  			this.$lineDom[id].childNodes[1].style.top = (ps.m2[1]+ps.m1[1])/2-Min-this.$lineDom[id].childNodes[1].offsetHeight/2-4;
  		}
  		else	this.$lineDom[id].childNodes[2].textContent=this.$lineData[id].name;
  		if(this.$editable){
  			this.$lineData[id].alt=true;
  		}
  	},
  	//删除转换线
  	delLine:function(id){
  		if(!this.$lineData[id])	return;
  		if(this.onItemDel!=null&&!this.onItemDel(id,"node"))	return;
  		if(this.$undoStack){
  			var paras=[id,this.$lineData[id]];
  			this.pushOper("addLine",paras);
  		}
  		this.$draw.removeChild(this.$lineDom[id]);
  		delete this.$lineData[id];
  		delete this.$lineDom[id];
  		if(this.$focus==id)	this.$focus="";
  		--this.$lineCount;
  		if(this.$editable){
  			//在回退新增操作时,如果节点ID以this.$id+"_line_"开头,则表示为本次编辑时新加入的节点,这些节点的删除不用加入到$deletedItem中
  			if(id.indexOf(this.$id+"_line_")<0)
  			this.$deletedItem[id]="line";
  			this.$mpFrom.hide().removeData("p");
  			this.$mpTo.hide().removeData("p");
  		}
  		this.$lineOper.hide().removeData("tid");
  	},
  	//变更连线两个端点所连的结点
  	//参数：要变更端点的连线ID，新的开始结点ID、新的结束结点ID；如果开始/结束结点ID是传入null或者""，则表示原端点不变
  	moveLinePoints:function(lineId, newStart, newEnd, noStack){
  		if(newStart==newEnd)	return;
  		if(!lineId||!this.$lineData[lineId])	return;
  		if(newStart==null||newStart=="")
  			newStart=this.$lineData[lineId].from;
  		if(newEnd==null||newEnd=="")
  			newEnd=this.$lineData[lineId].to;
  
  		//避免两个节点间不能有一条以上同向接连线
  		for(var k in this.$lineData){
  			if((newStart==this.$lineData[k].from&&newEnd==this.$lineData[k].to))
  				return;
  		}
  		if(this.onLinePointMove!=null&&!this.onLinePointMove(id,newStart,newEnd))	return;
  		if(this.$undoStack&&!noStack){
  			var paras=[lineId,this.$lineData[lineId].from,this.$lineData[lineId].to];
  			this.pushOper("moveLinePoints",paras);
  		}
  		if(newStart!=null&&newStart!=""){
  			this.$lineData[lineId].from=newStart;
  		}
  		if(newEnd!=null&&newEnd!=""){
  			this.$lineData[lineId].to=newEnd;
  		}
  		//重建转换线
  		this.$draw.removeChild(this.$lineDom[lineId]);
  		this.addLineDom(lineId,this.$lineData[lineId]);
  		if(this.$editable){
  			this.$lineData[lineId].alt=true;
  		}
  	},
  	
  	//用颜色标注/取消标注一个结点或转换线，常用于显示重点或流程的进度。
  	//这是一个在编辑模式中无用,但是在纯浏览模式中非常有用的方法，实际运用中可用于跟踪流程的进度。
  	markItem:function(id,type,mark){
  		if(type=="node"){
  			if(!this.$nodeData[id])	return;
  			if(this.onItemMark!=null&&!this.onItemMark(id,"node",mark))	return;
  			this.$nodeData[id].marked=mark||false;
  			if(mark){
  				this.$nodeDom[id].addClass("item_mark");
          jq.css("border-color",GooFlow.prototype.color.mark);
  			}
  			else{
  				this.$nodeDom[id].removeClass("item_mark");
  				if(id!=this.$focus) jq.css("border-color","transparent");
  			}
  			
  		}else if(type=="line"){
  			if(!this.$lineData[id])	return;
  			if(this.onItemMark!=null&&!this.onItemMark(id,"line",mark))	return;
  			this.$lineData[id].marked=mark||false;
  			if(GooFlow.prototype.useSVG!=""){
  				if(mark){
  					this.$nodeDom[id].childNodes[1].setAttribute("stroke",GooFlow.prototype.color.mark||"#ff3300");
  					this.$nodeDom[id].childNodes[1].setAttribute("marker-end","url(#arrow2)");
  				}else{
  					this.$nodeDom[id].childNodes[1].setAttribute("stroke",GooFlow.prototype.color.line||"#3892D3");
  					this.$nodeDom[id].childNodes[1].setAttribute("marker-end","url(#arrow1)");
  				}
  			}else{
  				if(mark)	this.$nodeDom[id].strokeColor=GooFlow.prototype.color.mark||"#ff3300";
  				else	this.$nodeDom[id].strokeColor=GooFlow.prototype.color.line||"#3892D3"
  			}
  		}
  		if(this.$undoStatck){
  			var paras=[id,type,!mark];
  			this.pushOper("markItem",paras);
  		}
  	},
  	////////////////////////以下为区域分组块操作
  	moveArea:function(id,left,top){
  		if(!this.$areaData[id])	return;
  		if(this.onItemMove!=null&&!this.onItemMove(id,"area",left,top))	return;
  		if(this.$undoStack){
  			var paras=[id,this.$areaData[id].left,this.$areaData[id].top];
  			this.pushOper("moveNode",paras);
  		}
  		if(left<0)	left=0;
  		if(top<0)	top=0;
  		$("#"+id).css({left:left+"px",top:top+"px"});
  		this.$areaData[id].left=left;
  		this.$areaData[id].top=top;
  		if(this.$editable){
  			this.$areaData[id].alt=true;
  		}
  	},
  	//删除区域分组
  	delArea:function(id){
  		if(!this.$areaData[id])	return;
  		if(this.$undoStack){
  			var paras=[id,this.$areaData[id]];
  			this.pushOper("addArea",paras);
  		}
  		if(this.onItemDel!=null&&!this.onItemDel(id,"node"))	return;
  		delete this.$areaData[id];
  		this.$areaDom[id].remove();
  		delete this.$areaDom[id];
  		--this.$areaCount;
  		if(this.$editable){
  			//在回退新增操作时,如果节点ID以this.$id+"_area_"开头,则表示为本次编辑时新加入的节点,这些节点的删除不用加入到$deletedItem中
  			if(id.indexOf(this.$id+"_area_")<0)
  			this.$deletedItem[id]="area";
  		}
  	},
  	//设置区域分组的颜色
  	setAreaColor:function(id,color){
  		if(!this.$areaData[id])	return;
  		if(this.$undoStack){
  			var paras=[id,this.$areaData[id].color];
  			this.pushOper("setAreaColor",paras);
  		}
  		if(color=="red"||color=="yellow"||color=="blue"||color=="green"){
  			this.$areaDom[id].removeClass("area_"+this.$areaData[id].color).addClass("area_"+color);
  			this.$areaData[id].color=color;
  		}
  		if(this.$editable){
  			this.$areaData[id].alt=true;
  		}
  	},
  	//设置区域分块的尺寸
  	resizeArea:function(id,width,height){
  		if(!this.$areaData[id])	return;
  		if(this.onItemResize!=null&&!this.onItemResize(id,"area",width,height))	return;
  		if(this.$undoStack){
  			var paras=[id,this.$areaData[id].width,this.$areaData[id].height];
  			this.pushOper("resizeArea",paras);
  		}
  		var hack=0;
  		if(navigator.userAgent.indexOf("8.0")!=-1)	hack=2;
  		this.$areaDom[id].children(".bg").css({width:width-2+"px",height:height-2+"px"});
  		width=this.$areaDom[id].outerWidth();
  		height=this.$areaDom[id].outerHeight();
  		this.$areaDom[id].children("bg").css({width:width-2+"px",height:height-2+"px"});
  		this.$areaData[id].width=width;
  		this.$areaData[id].height=height;
  		if(this.$editable){
  			this.$areaData[id].alt=true;
  		}
  	},
  	addArea:function(id,json){
  		if(this.onItemAdd!=null&&!this.onItemAdd(id,"area",json))return;
  		if(this.$undoStack&&this.$editable){
  			this.pushOper("delArea",[id]);
  		}
  		//如果超出画布
  		if((json.width+json.left)>this.$workArea.width()){
  			json.left = this.$workArea.width()-json.width;
  		}
  		if((json.height+json.top)>this.$workArea.height()){
  			json.top = this.$workArea.height()-json.height;
  		}
  		this.$areaDom[id]=$("<div id='"+id+"' class='GooFlow_area area_"+json.color+"' style='top:"+json.top+"px;left:"+json.left+"px'><div class='bg' style='width:"+(json.width-2)+"px;height:"+(json.height-2)+"px'></div>"
  		+"<label>"+json.name+"</label><i></i><div><div class='rs_bottom'></div><div class='rs_right'></div><div class='rs_rb'></div><div class='rs_close'></div></div></div>");
  		this.$areaData[id]=json;
  		this.$group.append(this.$areaDom[id]);
  		if(this.$nowType!="group")	this.$areaDom[id].children("div:eq(1)").css("display","none");
  		++this.$areaCount;
  		if(this.$editable){
  			this.$areaData[id].alt=true;
  			if(this.$deletedItem[id])	delete this.$deletedItem[id];//在回退删除操作时,去掉该元素的删除记录
  		}
  	},
  	//重构整个流程图设计器的宽高
  	reinitSize:function(width,height){
  		var w=(width||800)-2;
  		var h=(height||500)-2;
  		this.$bgDiv.css({height:h+"px",width:w+"px"});
  		var headHeight=0,hack=10;
  		if(this.$head!=null){
  			headHeight=24;
  			hack=7;
  		}
  		if(this.$tool!=null){
  			this.$tool.css({height:h-headHeight-hack+"px"});
  		}
  		w-=39;
  		h=h-headHeight-(this.$head!=null? 5:8);
  		this.$workArea.parent().css({height:h+"px",width:w+"px"});
  		this.$workArea.css({height:h+"px",width:w+"px"});
  		if(GooFlow.prototype.useSVG==""){
  			this.$draw.coordsize = w+","+h;
  		}
  		this.$draw.style.width = w + "px";
  		this.$draw.style.height = +h + "px";
  		if(this.$group==null){
  			this.$group.css({height:h+"px",width:w+"px"});
  		}
  	}
  }
  GooFlow.prototype.color={};
  //将此类的构造函数加入至JQUERY对象中
  jQuery.extend({
  	createGooFlow:function(bgDiv,property){
  		return new GooFlow(bgDiv,property);
  	}
  }); 
  //获取一个DIV的绝对坐标的功能函数,即使是非绝对定位,一样能获取到
  function getElCoordinate(dom) {
    var t = dom.offsetTop;
    var l = dom.offsetLeft;
    dom=dom.offsetParent;
    while (dom) {
      t += dom.offsetTop;
      l += dom.offsetLeft;
  	dom=dom.offsetParent;
    }; return {
      top: t,
      left: l
    };
  }
  //兼容各种浏览器的,获取鼠标真实位置
  function mousePosition(ev){
  	if(!ev) ev=window.event;
      if(ev.pageX || ev.pageY){
          return {x:ev.pageX, y:ev.pageY};
      }
      return {
          x:ev.clientX + document.documentElement.scrollLeft - document.body.clientLeft,
          y:ev.clientY + document.documentElement.scrollTop  - document.body.clientTop
      };
  }
  //给DATE类添加一个格式化输出字串的方法
  Date.prototype.format = function(format)   
  {   
     var o = {   
        "M+" : this.getMonth()+1, //month  
        "d+" : this.getDate(),    //day  
        "h+" : this.getHours(),   //hour  
        "m+" : this.getMinutes(), //minute  
        "s+" : this.getSeconds(), //second  ‘
  	  //quarter  
        "q+" : Math.floor((this.getMonth()+3)/3), 
        "S" : this.getMilliseconds() //millisecond  
     }   
     if(/(y+)/.test(format)) format=format.replace(RegExp.$1,(this.getFullYear()+"").substr(4 - RegExp.$1.length));   
      for(var k in o)if(new RegExp("("+ k +")").test(format))   
        format = format.replace(RegExp.$1,   
          RegExp.$1.length==1 ? o[k] :    
            ("00"+ o[k]).substr((""+ o[k]).length));   
      return format;   
  }
  //JS]根据格式字符串分析日期（MM与自动匹配两位的09和一位的9）
  //alert(getDateFromFormat(sDate,sFormat));
  function getDateFromFormat(dateString,formatString){
  	var regDate = /\d+/g;
  	var regFormat = /[YyMmdHhSs]+/g;
  	var dateMatches = dateString.match(regDate);
  	var formatmatches = formatString.match(regFormat);
  	var date = new Date();
  	for(var i=0;i<dateMatches.length;i++){
  		switch(formatmatches[i].substring(0,1)){
  			case 'Y':
  			case 'y':
  				date.setFullYear(parseInt(dateMatches[i]));break;
  			case 'M':
  				date.setMonth(parseInt(dateMatches[i])-1);break;
  			case 'd':
  				date.setDate(parseInt(dateMatches[i]));break;
  			case 'H':
  			case 'h':
  				date.setHours(parseInt(dateMatches[i]));break;
  			case 'm':
  				date.setMinutes(parseInt(dateMatches[i]));break;
  			case 's':
  				date.setSeconds(parseInt(dateMatches[i]));break;
  		}
  	}
  	return date;
  }
  //货币分析成浮点数
  //alert(parseCurrency("￥1,900,000.12"));
  function parseCurrency(currentString){
  	var regParser = /[\d\.]+/g;
  	var matches = currentString.match(regParser);
  	var result = '';
  	var dot = false;
  	for(var i=0;i<matches.length;i++){
  		var temp = matches[i];
  		if(temp =='.'){
  			if(dot) continue;
  		}
  		result += temp;
  	}
  	return parseFloat(result);
  }
  
  //将#XXXXXX颜色格式转换为RGB格式，并附加上透明度
  function brgba(hex, opacity) {
      if( ! /#?\d+/g.test(hex) ) return hex; //如果是“red”格式的颜色值，则不转换。//正则错误，参考后面的PS内容
      var h = hex.charAt(0) == "#" ? hex.substring(1) : hex,
          r = parseInt(h.substring(0,2),16),
          g = parseInt(h.substring(2,4),16),
          b = parseInt(h.substring(4,6),16),
          a = opacity;
      return "rgba(" + r + "," + g + "," + b + "," + a + ")";
  }