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[css]代码库

<div class="drag"></div>

    <script type="text/javascript">

    $(".drag").mousedown(function(e){

		 var x1=e.clientX-$(".drag").offset().left;

		 var y1=e.clientY-$(".drag").offset().top;

		 $(document).bind("selectstart",function(){return false;});

		 $(document).mousemove(function(e){

			 var x2=e.clientX-x1;

			 var y2=e.clientY-y1;

			 $(".drag").css({left:x2,top:y2});

			  

			 })

		 })

		 $(document).mouseup(function(){

			 $(document).unbind('selectstart');

			 $(document).unbind('mousemove');

			 })

    </script>