<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<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}
.closediv
{cursor:default;}
.minusspan
{cursor:default;}
.mo .nr
{height:80px;border:1px solid #F3F3F3;margin:2px}
h1
{margin:0px;padding:0px;text-align:left;font-size:12px}
.dragging 
{
    FILTER
: progid:DXImageTransform.Microsoft.Alpha(opacity=60); opacity: 0.6; moz-opacity: 0.6
}


</style>
<script language="javascript">
/*
ikaiser@163.com 2007-1-11 改动
1、添加拖动层时的虚线框
2、添加拖动层时的半透明效果
3、加入层折叠和关闭功能
具体的代码改动我已经在代码中标出
*/

var dragobj={}
window.onerror
=function(){return false}
var domid=12
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.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
=addevent;
        
//添加折叠和关闭按钮
        var tt = document.createElement("div");
        tt.style.cssText 
= "float:left";
        
        
var span = document.createElement("span");
        span.innerHTML 
= "--"+o[i].innerHTML;
        span.style.cssText 
= "cursor:default;";
        span.onmousedown 
= minusDiv;
        tt.appendChild(span);
        
        
var close = document.createElement("div");
        close.innerHTML 
= "X";
        close.style.cssText 
= "cursor:default;float:right";
        close.onmousedown 
= closeDiv;
        o[i].innerHTML 
= "";
        o[i].appendChild(tt);
        o[i].appendChild(close);
    }

}

//折叠或者显示层
function minusDiv(e)
{
    e
=e||event
    
var nr = this.parentNode.parentNode.nextSibling;    //取得内容层
    nr.style.display = nr.style.display==""?"none":"";
}


//移出层
function closeDiv(e)
{
    e
=e||event
    
var mdiv = this.parentNode.parentNode;    //取得目标层
    oDel(mdiv);
}


function addevent(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.className = 'dragging';
    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"
    dragobj.o.style.filter
='alpha(opacity=60)';        //添加拖动透明效果

    
var om=document.createElement("div")
    dragobj.otemp
=om
    om.style.width
=dragobj.xy[2]+"px"
    om.style.height
=dragobj.xy[3]+"px"
    om.style.border 
= "1px dashed red";    //ikaiser添加,实现虚线框
    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, dragobj.o)    
//传递当前拖动对象
    }

}

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;
}

//将当前拖动层在拖动时可变化大小,预览效果
function createtmpl(e, elm){
    
for(var i=0;i<domid;i++){
        
if(document.getElementById("m"+i) == null)    //已经移出的层不再遍历
            continue;
        
if($("m"+i)==dragobj.o)
            
continue
        
var b=inner($("m"+i),e)
        
if(b==0)
            
continue
        dragobj.otemp.style.width
=$("m"+i).offsetWidth
        elm.style.width 
= $("m"+i).offsetWidth;
        
//1为下移,2为上移
        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<3;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"
        }

    }

}

function add_div()
{
    
var o=document.createElement("div")
    o.className
="mo"
    o.id
="m"+domid
    $('dom0').appendChild(o)
    o.innerHTML
="<h1>dom"+domid+"</h1><div class=nr></div>"
    o.getElementsByTagName(
"h1")[0].onmousedown=addevent
    domid
++
}

</script>
</head>
<body>
<INPUT TYPE="button" value="添加DIV" onclick="add_div();">
<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>



原址链接