text: var radius;
  var dtr = Math.PI/90;
  var d=600;
  var mcList = [];
  var active = true;
  var lasta = 1;
  var lastb = 1;
  var distr = true;
  var tspeed=5;
  var size=600;
  
  var mouseX=0;
  var mouseY=0;
  
  var howElliptical=1;
  
  var aA=null;
  var oDiv=null;
  
  window.onload=function ()
  {
  	var x1=(document.documentElement.clientHeight/2);
  	var y1=(document.documentElement.clientWidth/2);
  	radius=x1>y1?y1:x1;
  	radius=radius-50;
  	var i=0;
  	var oTag=null;
  	
  	oDiv=document.getElementById('tagsList');
  	
  	aA=oDiv.getElementsByTagName('a');
  	
  	for(i=0;i<aA.length;i++)
  	{
  		oTag={};
  		
  		oTag.offsetWidth=aA[i].offsetWidth;
  		oTag.offsetHeight=aA[i].offsetHeight;
  		
  		mcList.push(oTag);
  	}
  	
  	sineCosine( 0,0,0 );
  	
  	positionAll();
  	
  	oDiv.onmouseover=function ()
  	{
  		active=true;
  	};
  	
  	oDiv.onmouseout=function ()
  	{
  		active=false;
  	};
  	
  	oDiv.onmousemove=function (ev)
  	{
  		var oEvent=window.event || ev;
  		
  		mouseX=oEvent.clientX-(oDiv.offsetLeft+oDiv.offsetWidth/2);
  		mouseY=oEvent.clientY-(oDiv.offsetTop+oDiv.offsetHeight/2);
  		
  		mouseX/=5;
  		mouseY/=5;
  	};
  	
  	setInterval(update, 30);
  };
  
  function update()
  {
  	var a;
  	var b;
  	
  	if(active)
  	{
  		a = (-Math.min( Math.max( -mouseY, -size ), size ) / radius ) * tspeed;
  		b = (Math.min( Math.max( -mouseX, -size ), size ) / radius ) * tspeed;
  	}
  	else
  	{
  		a = lasta * 0.98;
  		b = lastb * 0.98;
  	}
  	
  	lasta=a;
  	lastb=b;
  	
  	if(Math.abs(a)<=0.01 && Math.abs(b)<=0.01)
  	{
  		return;
  	}
  	
  	var c=0;
  	sineCosine(a,b,c);
  	for(var j=0;j<mcList.length;j++)
  	{
  		var rx1=mcList[j].cx;
  		var ry1=mcList[j].cy*ca+mcList[j].cz*(-sa);
  		var rz1=mcList[j].cy*sa+mcList[j].cz*ca;
  		
  		var rx2=rx1*cb+rz1*sb;
  		var ry2=ry1;
  		var rz2=rx1*(-sb)+rz1*cb;
  		
  		var rx3=rx2*cc+ry2*(-sc);
  		var ry3=rx2*sc+ry2*cc;
  		var rz3=rz2;
  		
  		mcList[j].cx=rx3;
  		mcList[j].cy=ry3;
  		mcList[j].cz=rz3;
  		
  		per=d/(d+rz3);
  		
  		mcList[j].x=(howElliptical*rx3*per)-(howElliptical*2);
  		mcList[j].y=ry3*per;
  		mcList[j].scale=per;
  		mcList[j].alpha=per;
  		
  		mcList[j].alpha=(mcList[j].alpha-0.7)*(10/7);
  	}
  	
  	doPosition();
  	depthSort();
  }
  
  function depthSort()
  {
  	var i=0;
  	var aTmp=[];
  	
  	for(i=0;i<aA.length;i++)
  	{
  		aTmp.push(aA[i]);
  	}
  	
  	aTmp.sort
  	(
  		function (vItem1, vItem2)
  		{
  			if(vItem1.cz>vItem2.cz)
  			{
  				return -1;
  			}
  			else if(vItem1.cz<vItem2.cz)
  			{
  				return 1;
  			}
  			else
  			{
  				return 0;
  			}
  		}
  	);
  	
  	for(i=0;i<aTmp.length;i++)
  	{
  		aTmp[i].style.zIndex=i;
  	}
  }
  
  function positionAll()
  {
  	var phi=0;
  	var theta=0;
  	var max=mcList.length;
  	var i=0;
  	
  	var aTmp=[];
  	var oFragment=document.createDocumentFragment();
  	
  	//�������
  	for(i=0;i<aA.length;i++)
  	{
  		aTmp.push(aA[i]);
  	}
  	
  	aTmp.sort
  	(
  		function ()
  		{
  			return Math.random()<0.5?1:-1;
  		}
  	);
  	
  	for(i=0;i<aTmp.length;i++)
  	{
  		oFragment.appendChild(aTmp[i]);
  	}
  	
  	oDiv.appendChild(oFragment);
  	
  	for( var i=1; i<max+1; i++){
  		if( distr )
  		{
  			phi = Math.acos(-1+(2*i-1)/max);
  			theta = Math.sqrt(max*Math.PI)*phi;
  		}
  		else
  		{
  			phi = Math.random()*(Math.PI);
  			theta = Math.random()*(2*Math.PI);
  		}
  		//���任
  		mcList[i-1].cx = radius * Math.cos(theta)*Math.sin(phi);
  		mcList[i-1].cy = radius * Math.sin(theta)*Math.sin(phi);
  		mcList[i-1].cz = radius * Math.cos(phi);
  		
  		aA[i-1].style.left=mcList[i-1].cx+oDiv.offsetWidth/2-mcList[i-1].offsetWidth/2+'px';
  		aA[i-1].style.top=mcList[i-1].cy+oDiv.offsetHeight/2-mcList[i-1].offsetHeight/2+'px';
  	}
  }
  
  function doPosition()
  {
  	var l=oDiv.offsetWidth/2;
  	var t=oDiv.offsetHeight/2;
  	for(var i=0;i<mcList.length;i++)
  	{
  		aA[i].style.left=mcList[i].cx+l-mcList[i].offsetWidth/2+'px';
  		aA[i].style.top=mcList[i].cy+t-mcList[i].offsetHeight/2+'px';
  		
  		aA[i].style.fontSize=Math.ceil(12*mcList[i].scale/2)+8+'px';
  		
  		aA[i].style.filter="alpha(opacity="+100*mcList[i].alpha+")";
  		aA[i].style.opacity=mcList[i].alpha;
  	}
  }
  
  function sineCosine( a, b, c)
  {
  	sa = Math.sin(a * dtr);
  	ca = Math.cos(a * dtr);
  	sb = Math.sin(b * dtr);
  	cb = Math.cos(b * dtr);
  	sc = Math.sin(c * dtr);
  	cc = Math.cos(c * dtr);
  }
  