anchor.diff:  		</div>
   		<div class="check_tip" id="tips">请在图中找出并选择你自己，确定提交</div>
   		<div class="check_peopleimg">
  -			<canvas id="myCanvas" width="800" height="370"
  +			<canvas id="myCanvas" width="800" height="400"
   				style="background:url(d:\\1.jpg);background-size:100% 100%">
   		</div>
   		<s:form  action="student_addFace"  method="post">
  
positive.code: 					&& (arr[i].y + arr[i].height) >= p.y && p.y >= arr[i].y) {
  				whichObject.push(i);
  				//清空所有的绘图
  				ctx.clearRect(0, 0, 800, 370);
  				//把所有的脸选择改为false
  				for (var n = 0; n < arr.length; n++) {
  					arr[n].selected = false;
  
negative.code: 		if (canvas.getContext && count == 1) {
  			var ctx = canvas.getContext('2d');
  
  			ctx.strokeStyle = '#ff0000';
  			initData();
  			//左上角的x，y坐标，长宽
  			for(var m=0;m<size;m++){
  