JQueryウィンドウのドラッグ効果


JQueryコード
var _z=9999;
$(document).ready(function(){
 var _move=false;//    
 var _x,_y;//             
 var wd;//  
    $(".window").click(function(){
        //alert("click");//  (     )
     this.style.cursor = "default";//    
     //this.style.zIndex = 999;
        }).mousedown(function(e){
        _move=true;
        wd=$(this);
        this.style.cursor = "move";//    
        this.style.zIndex = _z;//    
        _z++;
        _x=e.pageX-(isNaN(parseInt(wd.css("left")))?0:parseInt(wd.css("left")));
        _y=e.pageY-(isNaN(parseInt(wd.css("top")))?0:parseInt(wd.css("top")));       
        /*  wd.fadeTo(20, 0.25); *///            
        $(document).mousemove(function(e){
            if(_move){
                var x=e.pageX-_x;//                     
                var y=e.pageY-_y;
                wd.css({top:y,left:x});//     
            }
        }).mouseup(function(){
        _move=false;
        /* wd.fadeTo("fast", 1); *///                
      });
    });
   
});

Htmlコード
<style>
        .window{
            	width:100px;
            	height:100px;
            	cursor:pointer;
                position: relative;
                left:100px;
                top:90px;
                
                background-color:#DCDCDC;
                border-radius: 7px;
                z-index: 1;
            	border:1px solid black;
            	padding:50px;
            
        }
        .body{
        
        padding:20px 30px 30px 30px;
        position:absolute;
        top:150px;
        left:50%;
        margin-left:-500px;
    	width:940px;
        min-width:940px;
        background-color:#F8F8FF;
        border:1px solid #DCDCDC;
        border-bottom:5px solid #BA55D3;
        border-radius:3px;
        behavior:url(js/PIE.htc);
    }
    </style>
    </head>
    <body>
        <div class="body"  >
        <div class="window"  title="    ">    </div>
        </div>
    </body>

効果:http://oospace.sinaapp.com/1.php
 
使用方法:
1、divにclass=“window”を追加すればいい
2,divは一定の幅と高さが必要です
 
実現原理:
未完待续..