QQ code (compatible with individual browsers). Need friends can come to the reference, I hope to help you.
Code as follows: <script language= "JavaScript" type= "Text/javascript" > lastscrolly=0; function heartBeat () { var diffy; if (document.documentelement && document.documentElement.scrollTop) Diffy = Document.documentElement.scrollTop; else if (document.body) Diffy = Document.body.scrollTop else {/*netscape stuff*/} //alert (Diffy); Percent=.1* (diffy-lastscrolly); if (percent>0) Percent=math.ceil (percent); else Percent=math.floor ( percent); document.getElementById ("Ad_left"). Style.top=parseint (document.getElementById ("Ad_left"). Style.top) +percent+ "px"; document.getElementById ("Ad_right"). Style.top=parseint (document.getElementById ("Ad_left"). Style.top) + percent+ "px"; lastscrolly=lastscrolly+percent; //alert (lastscrolly); The function hidead (num) {Showad = false; if (num==1) document.getElementById ("Ad_left"). style.display= "None"; else if (num ==2) document.getElementById ("Ad_right"). style.display= "None"; } var ClosebuttonHtml1 = ' <div style= ' position:absolute;bottom:0px;right:25px;margin:2px;padding:2px;z-index:2000; ><a href= "javascript:void (0);" onclick= "Hidead (1)" style= "color: #ffffff; text-decoration:none;font-size:12px ;" > Close </a></div> '; var ClosebuttonHtml2 = ' <div style= ' position:absolute;bottom:0px;right:25px;margin:2px;padding:2px;z-index:2000 ;" ><a href= "javascript:void (1);" Onclick= "Hidead (2)" style= "color: #ffffff; text-decoration:none;font-size:12px ;" > Close </a></div> '; ad1= "<div id=/" ad_left/"style= ' right:10px"; Position:absolute; top:160px; ' ></div> "ad2=" <div id=/"ad_right/" style= ' right:10px; Position:absolute; top:160px; ' ><br><a href= ' tencent://message/?uin=758541860&menu=yes ' ><img height= ' src= '. /images/qq.gif ' border= ' 0 ' width= ' ></a></div> '; document.write (AD1); document.write (ad2); window.setinterval ("HeartBeat ()", 1); </script>