页面两侧对联广告(允许关闭)代码效果

  现在很多网站广告做的如火如荼,现在我就来介绍一下常见的对联浮动广告效果的代码使用方法,本文介绍的这种效果,在1024*768分辨率下正常显示,在800*600的分辨率下可以自动隐藏,以免遮住页面影响访问者浏览内容,而且与前面两个代码不同的是,广告图下方增加了一个图片按纽,允许访客点击关闭广告图片,下面文本框中就是实现效果所需代码:

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://www.webjx.com target=_blank><img src=/img2/js050121_1.gif width=100 height=400 border=0></a><br><img src="/img2/js050121_close.gif" onClick="closeBanner();">');
theFloaters.addItem('followDiv2',0,0,'<a onClick="closeBanner();" href=http://www.webjx.com target=_blank><img src=/img2/js050121_2.gif width=100 height=400 border=0 ></a><br><img src="/img2/js050121_close.gif" onClick="closeBanner();">');
theFloaters.play();

把上面的代码另存为一个JS文件,然后在想实现此效果的页面用<script type="text/javascript" language="javascript1.2" src="*.js"></SCRIPT>调用即可,*代表你另存的文件名!注意修改广告图片地址和连接地址!

点击此处查看效果

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