网页中鼠标感应的图片[网页特效]

dn001 2009-06-21 08:17:40

网页特效代码实例,打开网页后定时显示大图片广告然后自动关闭,一些门户比如163首页就有这种广告效果.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <title>顶部展出的大幅广告</title> <script type="text/javascript" language="javascript"> var time = 500; var h = 0; function addCount() { if(time>0) { time--; h = h+5; } else { return; } if(h>500) //高度 { return; } document.getElementById("ads").style.display = ""; document.getElementById("ads").style.height = h+"px"; setTimeout("addCount()",30); } window.onload = function showAds() { addCount(); setTimeout("noneAds()",7000); //停留时间自己适当调整 } </script> <script type="text/javascript" language="javascript"> var T = 500; var N = 500; //高度 function noneAds() { if(T>0) { T--; N = N-5; } else { return; } if(N<0) { document.getElementById("ads").style.display = "none"; return; } document.getElementById("ads").style.height = N+"px"; setTimeout("noneAds()",30); } </script> </head> <body> <div id="ads" style="margin:auto; display:none; width:900px; top:0px; height:0px; border:solid 1px #000; background-color:#fafafa; overflow:hidden; text-align:center;"> <a target="_blank" href="http://www.knowsky.com">网页教学网地址：http://www.knowsky.com</a> </div> <div style="margin:auto; width:900px; height:200px; border:solid 1px #000; background-color:#fafafa; text-align:center;"> 网站主体内容 </div> </body> </html>