var tcDiv;
    var tcTitle;      
    var dx,dy,mx,my,mouseD;
    var odrag;
    var isIE = document.all ? true : false;
	function show(ev,div_id,title_id,div_width){
		tcDiv = document.getElementById(div_id);
    	tcTitle = document.getElementById(title_id);
    document.onmousedown = function(ev){
        var e = ev ? ev : event;
        if(e.button == (document.all ? 1 : 0))
        {
            mouseD = true;            
        }
    }
    document.onmouseup = function(){
        mouseD = false;
        odrag = "";
        if(isIE)
        {
            tcDiv.releaseCapture();
            tcDiv.filters.alpha.opacity = 100;
        }
        else
        {
            window.releaseEvents(tcDiv.MOUSEMOVE);
            tcDiv.style.opacity = 1;
        }        
    }
    tcTitle.onmousedown = function(ev){
    	odrag = this;
        var e = ev ? ev : event;
        if(e.button == (document.all ? 1 : 0))
        {
            mx = e.clientX;
            my = e.clientY;
            tcDiv.style.left = tcDiv.offsetLeft + "px";
            tcDiv.style.top = tcDiv.offsetTop + "px";
            if(isIE)
            {
                tcDiv.setCapture();                
                tcDiv.filters.alpha.opacity = 50;
            }
            else
            {
                window.captureEvents(Event.MOUSEMOVE);
                tcDiv.style.opacity = 0.5;
            }
        } 
    }
    document.onmousemove = function(ev){
    	var e = ev ? ev : event;  
        if(mouseD==true && odrag)
        {        
            var mrx = e.clientX - mx;
            var mry = e.clientY - my;
            tcDiv.style.left = parseInt(tcDiv.style.left) +mrx + "px";
            tcDiv.style.top = parseInt(tcDiv.style.top) + mry + "px";          
            mx = e.clientX;
            my = e.clientY;
        }
    }  
		var bWidth=parseInt(document.documentElement.scrollWidth);
		var bHeight=parseInt(document.documentElement.scrollHeight)<592?592:parseInt(document.documentElement.scrollHeight);
		var cX = (bWidth - div_width)/2;
	    var o = document.getElementById(div_id);
	    o.style.display = "block";
	    o.style.left= cX + "px";
	}  
	   
  function closeedTiao(id){
  	document.getElementById(id).style.display = "none";
  }