var delta=0.015; 
    var collection; 
    var closeB=false; 
    function floaters() { 
    this.items = []; 
    this.addItem = function(id,x,y,content) 
    { 
    document.write('<DIV id='+id+' style="Z-INDEX: 10; POSITION: absolute; width:80px; height:60px;left:'+(typeof(x)=='string'?eval(x):x)+';top:'+(typeof(y)=='string'?eval(y):y)+'">'+content+'</DIV>'); 
    
    var newItem = {}; 
    newItem.object = document.getElementById(id); 
    newItem.x = x; 
    newItem.y = y; 
    
    this.items[this.items.length] = newItem; 
    } 
    this.play = function() 
    { 
    collection = this.items 
    setInterval('play()',30); 
    } 
    } 
    function play() 
    { 
    if(screen.width<=800 || closeB) 
    { 
    for(var i=0;i<collection.length;i++) 
    { 
    collection[i].object.style.display = 'none'; 
    } 
    return; 
    } 
    for(var i=0;i<collection.length;i++) 
    { 
    var followObj = collection[i].object; 
    var followObj_x = (typeof(collection[i].x)=='string'?eval(collection[i].x):collection[i].x); 
    var followObj_y = (typeof(collection[i].y)=='string'?eval(collection[i].y):collection[i].y); 
    
    if(followObj.offsetLeft!=(document.body.scrollLeft+followObj_x)) { 
    var dx=(document.body.scrollLeft+followObj_x-followObj.offsetLeft)*delta; 
    dx=(dx>0?1:-1)*Math.ceil(Math.abs(dx)); 
    followObj.style.left=followObj.offsetLeft+dx; 
    } 
    
    if(followObj.offsetTop!=(document.body.scrollTop+followObj_y)) { 
    var dy=(document.body.scrollTop+followObj_y-followObj.offsetTop)*delta; 
    dy=(dy>0?1:-1)*Math.ceil(Math.abs(dy)); 
    followObj.style.top=followObj.offsetTop+dy; 
    } 
    followObj.style.display = ''; 
    } 
    } 
    function closeBanner() 
    { 
    closeB=true; 
    return; 
    } 
    
    var theFloaters = new floaters(); 
    // 
    theFloaters.addItem('followDiv1','document.body.clientWidth-100',0,'<a onClick="closeBanner();" href=http://bbs.51377x.com/thread-164681-1-1.html target=_blank><img src=http://www.51377x.com/js/zuo.gif width=100 height=554 border=0></a><br><br><img src=ad/doublead/close.gif onClick="closeBanner();">'); 
    theFloaters.addItem('followDiv2',0,0,'<a onClick="closeBanner();" href=http://bbs.51377x.com/thread-164681-1-1.html target=_blank><img src=http://www.51377x.com/js/you.gif width=100 height=400 border=0 ></a><br><br><img src=ad/doublead/close.gif onClick="closeBanner();">'); 
    theFloaters.play();