var delta=0.15;//滚动速度控制
var collection;
var closeB=false;
function floaters() {
  this.items = [];
  this.addItem = function(id,x,y,content)
      {
     document.write('<DIV id='+id+' style="Z-INDEX: 0; 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;//距离左侧的距离
     newItem.y    = y;//距离上方的距离

     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-120',0,'<a href=http://www.netpolice.com.cn/ target=_blank><img src=image/dtgt_sm.gif width=125 height=125 border=0></a><img src=image/close_1.gif onClick="closeBanner();">');
theFloaters.addItem('followDiv2',0,0,'<a href=http://www.netpolice.com.cn/ target=_blank><img src=image/dtgt_sm.gif width=122 height=125 border=0 ></a><img src=image/close_1.gif onClick="closeBanner();">');
theFloaters.play(); 
 //document.body.clientWidth-120控制左右间距