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对联广告js代码

时间：2015-06-02 21:14 来源：作者：阅读：次

可以外部引用:<SCRIPT language=javascript src="duilian.js"></SCRIPT>

=================js 文件:duilian.js==================================================

var left_img='<a target=_blank href="http://hi.baidu.com/netidea/"><img src=/qq/UploadFiles_6087/200912/20091224174520225.jpg border=0></a>';
var right_img='<a target=_blank href="http://hi.baidu.com/netidea"><img src=/qq/UploadFiles_6087/200912/20091224174520225.jpg border=0></a>';

var delta=0.05
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',50,''+right_img+'');
theFloaters.addItem('followDiv2',6,50,''+left_img+'');
theFloaters.play();

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