Couplet floating ad effect_advertising code

Nowadays, many website advertisements are in full swing. Now I will introduce the code usage of common couplet floating advertising effect. The effect introduced can be displayed normally at the resolution of 1024*768 and can be displayed at the resolution of 800*600. Automatically hide to avoid blocking the page and affecting visitors' browsing content. The following is the code required to achieve the effect:

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]<script>//固漂广告 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+''); 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-105',20,'<a href="http://www.iyuanma.com/sucai/" target="_blank" title="素材频道"><IMG src="http://www.iyuanma.com/asd/images/asd_top_100.gif" width=100 height=400 border="0">'); theFloaters.addItem('followDiv2',10,20,'<a href="http://www.iyuanma.com/sucai/" target="_blank" title="素材频道"><IMG src="http://www.iyuanma.com/asd/images/asd_top_100-2.gif" width=100 height=400 border="0">'); theFloaters.play(); //固漂广告end</script>