这段程序放在<body>与</body>之间
<script language="javascript">
var b = 1;
var c = true;
function fade(){
if(document.all);
if(c == true) {
b++;
}
if(b==100) {
b--;
c = false
}
if(b==10) {
b++;
c = true;
}
if(c == false) {
b--;
}
child.filters.alpha.opacity=0 + b;
setTimeout("fade()",100);
}
</script>
<img src="img/1.jpg" name="child" border=0
alt="Image" style="filter:alpha(opacity=0)">
只需要改src="img/1.jpg"这个地址就行了!