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);
     }
 }
/// 只有屏幕宽>=800时，才显示

 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 = '';
        }
 }
  ///关闭广告
 function closeBanner()
    {
      closeB=true;
      return;
   }