同学录的设计

				
				var dragapproved=false
				var eventsource,x,y
				//eventsource=document.winstepsform
				function move()
				 {
				  if (event.button==1&&dragapproved) //改变被拖动元素在页面上的位置
				   {
				    eventsource.style.pixelLeft=temp1+event.clientX-x
				    eventsource.style.pixelTop=temp2+event.clientY-y
				    return false
				   }
				 }
				function drags()
				 {
				  if (!document.all)
				  return
				  if (event.srcElement.className=="drag") //捕捉鼠标和被拖动元素的当前位置
				   {
				    dragapproved=true
				    eventsource=event.srcElement
				   //alert(eventsource.style.name) 
				    temp1=eventsource.style.pixelLeft
				    temp2=eventsource.style.pixelTop
				    x=event.clientX
				    y=event.clientY
				    document.onmousemove=move
				   }
				 }
				document.onmousedown=drags   //鼠标左键按下时,准备拖动
				document.onmouseup=new Function("dragapproved=false")//鼠标左键放开时,拖动停止