用虚线做的表格[网页特效]

不知道你见过没有，这个特效是把网页中图片的默认alt的提示去掉

<img src="http://www.knowsky.com/images/logo.gif" alt="网页教学网1号站">

<img src="http://www.knowsky.com/images/logo.gif" alt="网页教学网2号站">

<img src="http://www.knowsky.com/images/logo.gif" alt="网页教学网3号站">

<div style="visibility:hidden;border:0px solid #000000;background-color:#333333;font-size:12px;color:#6699cc;position:absolute;" id=altlayer></div>

<script>

document.body.onmousemove=quickalt;

function quickalt() {

if (event.srcElement.hint)event.srcElement.alt=event.srcElement.hint;

if(event.srcElement.alt && event.srcElement.alt!='') {

event.srcElement.hint=event.srcElement.alt;

altlayer.style.visibility='visible';

altlayer.style.left=event.x-1;

altlayer.style.top=event.y+16;

altlayer.innerHTML=event.srcElement.hint

event.srcElement.alt="";

}

else altlayer.style.visibility='hidden';}

</script>