一个用js+div实现的拖拽,适合开发个性化显示的效果

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>框架自定义拖拽</title>
<style>
body {
	margin:0px;
	padding:0px;
	font-size:12px;
	text-align:center;
}
body > div {
	text-align:center;
	margin-right:auto;
	margin-left:auto;
}
.content {
	width:900px;
}
.content .left {
	float:left;
	width:20%;
	border:1px solid #FF0000;
	margin:3px;
}
.content .center {
	float:left;
	border:1px solid #FF0000;
	margin:3px;
	width:57%
}
.content .right {
	float:right;
	width:20%;
	border:1px solid #FF0000;
	margin:3px
}
.mo {
	height:auto;
	border:1px solid #CCC;
	margin:3px;
	background:#FFF
}
.mo h1 {
	background:#ECF9FF;
	height:18px;
	padding:3px;
	cursor:move
}
.mo .nr {
	height:80px;
	border:1px solid #F3F3F3;
	margin:2px
}
h1 {
	margin:0px;
	padding:0px;
	text-align:left;
	font-size:12px
}
</style>
<script>
var dragobj={}
window.onerror=function(){return false}
function on_ini(){
 String.prototype.inc=function(s){return this.indexOf(s)>-1?true:false}
 var agent=navigator.userAgent
 window.isOpr=agent.inc("Opera")
 window.isIE=agent.inc("IE")&&!isOpr
 window.isMoz=agent.inc("Mozilla")&&!isOpr&&!isIE
 if(isMoz){
  Event.prototype.__defineGetter__("x",function(){return this.clientX+2})
  Event.prototype.__defineGetter__("y",function(){return this.clientY+2})
 }
 basic_ini()
}
function basic_ini(){
 window.$=function(obj){return typeof(obj)=="string"?document.getElementById(obj):obj}
 window.oDel=function(obj){if($(obj)!=null){$(obj).parentNode.removeChild($(obj))}}
}
window.onload=function(){
 on_ini()
 var o=document.getElementsByTagName("h1")
 for(var i=0;i<o.length;i++){
  o[i].onmousedown=function(e){
   if(dragobj.o!=null)
    return false
   e=e||event
   dragobj.o=this.parentNode
   dragobj.xy=getxy(dragobj.o)
   dragobj.xx=new Array((e.x-dragobj.xy[1]),(e.y-dragobj.xy[0]))
   dragobj.o.style.width=dragobj.xy[2]+"px"
   dragobj.o.style.height=dragobj.xy[3]+"px"
   dragobj.o.style.left=(e.x-dragobj.xx[0])+"px"
   dragobj.o.style.top=(e.y-dragobj.xx[1])+"px"   
   dragobj.o.style.position="absolute"
   var om=document.createElement("div")
   dragobj.otemp=om
   om.style.width=dragobj.xy[2]+"px"
   om.style.height=dragobj.xy[3]+"px"
   dragobj.o.parentNode.insertBefore(om,dragobj.o)
   return false
  }
 }
}
document.onselectstart=function(){return false}
window.onfocus=function(){document.onmouseup()}
window.onblur=function(){document.onmouseup()}
document.onmouseup=function(){
 if(dragobj.o!=null){
  dragobj.o.style.width="auto"
  dragobj.o.style.height="auto"
  dragobj.otemp.parentNode.insertBefore(dragobj.o,dragobj.otemp)
  dragobj.o.style.position=""
  oDel(dragobj.otemp)
  dragobj={}
 }
}
document.onmousemove=function(e){
 e=e||event
 if(dragobj.o!=null){
  dragobj.o.style.left=(e.x-dragobj.xx[0])+"px"
  dragobj.o.style.top=(e.y-dragobj.xx[1])+"px"
  createtmpl(e)
 }
}
function getxy(e){
 var a=new Array()
 var t=e.offsetTop;
 var l=e.offsetLeft;
 var w=e.offsetWidth;
 var h=e.offsetHeight;
 while(e=e.offsetParent){
  t+=e.offsetTop;
  l+=e.offsetLeft;
 }
 a[0]=t;a[1]=l;a[2]=w;a[3]=h
  return a;
}
function inner(o,e){
 var a=getxy(o)
 if(e.x>a[1]&&e.x<(a[1]+a[2])&&e.y>a[0]&&e.y<(a[0]+a[3])){
  if(e.y<(a[0]+a[3]/2))
   return 1;
  else
   return 2;
 }else
  return 0;
}
function createtmpl(e){
 for(var i=0;i<12;i++){
  if($("m"+i)==dragobj.o)
   continue
  var b=inner($("m"+i),e)
  if(b==0)
   continue
  dragobj.otemp.style.width=$("m"+i).offsetWidth
  if(b==1){
   $("m"+i).parentNode.insertBefore(dragobj.otemp,$("m"+i))
  }else{
   if($("m"+i).nextSibling==null){
    $("m"+i).parentNode.appendChild(dragobj.otemp)
   }else{
    $("m"+i).parentNode.insertBefore(dragobj.otemp,$("m"+i).nextSibling)
   }
  }
  return
 }
 for(var j=0;j<4;j++){
  if($("dom"+j).innerHTML.inc("div")||$("dom"+j).innerHTML.inc("DIV"))
   continue
  var op=getxy($("dom"+j))
  if(e.x>(op[1]+10)&&e.x<(op[1]+op[2]-10)){
   $("dom"+j).appendChild(dragobj.otemp)
   dragobj.otemp.style.width=(op[2]-10)+"px"
  }
 }
}
</script>
</head>
<body>
<div class=content>
  <div class=left id=dom0>
    <div class=mo id=m0>

      <h1>dom0</h1>
      <div class="nr"></div>
    </div>
    <div class=mo id=m1>
      <h1>dom1</h1>
      <div class="nr"></div>
    </div>
    <div class=mo id=m2>

      <h1>dom2</h1>
      <div class="nr"></div>
    </div>
    <div class=mo id=m3>
      <h1>dom3</h1>
      <div class="nr"></div>
    </div>
  </div>

  
  <div class=center id=dom1>
    <div class=mo id=m4>
      <h1>dom4</h1>
      <div class="nr"></div>
    </div>
    <div class=mo id=m5>
      <h1>dom5</h1>
      <div class="nr"></div>

    </div>
    <div class=mo id=m6>
      <h1>dom6</h1>
      <div class="nr"></div>
    </div>
    <div class=mo id=m7>
      <h1>dom7</h1>
      <div class="nr"></div>

    </div>
  </div>
  
  <div class=right id=dom2>
    <div class=mo id=m8>
      <h1>dom8</h1>
      <div class="nr"></div>
    </div>
    <div class=mo id=m9>

      <h1>dom9</h1>
      <div class="nr"></div>
    </div>
    <div class=mo id=m10>
      <h1>dom10</h1>
      <div class="nr"></div>
    </div>
    <div class=mo id=m11>

      <h1>dom11</h1>
      <div class="nr"></div>
    </div>

  </div>
</div>
</body>
</html>
 

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