为什么我的js对联广告代码一到xhtml1.0里面就不滚动了！

yasire1 2009-03-28 11:10:24

代码如下：

var   delta=0.15;

  var   collection;   

  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()',10);   

  }   

  }   

  function   play()   

  {   

    

  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   =   '';   

  }   

  }     

    

  var   theFloaters   =   new   floaters();   

  theFloaters.addItem('followDiv1','document.body.clientWidth-110',230,'<a   href=http://wpa.qq.com/msgrd?V=1&Uin=563758618&Site=盛园花卉苗木繁育基地&Menu=yes   target=_blank><img   src=images/4.gif   border=0></a><br><br>');   

  theFloaters.play();

如果不写<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">则可以显示的很好，但是一些上也能显示出来，但是不随着滚动轴滚动了，呆在一个位置不动了！

麻烦帮我看下怎么回事啊？或者给我一个好使的！

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