图片渐显特效1

 

代码如下------------------------------------------------------------------------------------------------

<IMG style="FILTER: alpha(opacity=0)" src="图片地址" border=1 name=u>
<SCRIPT language=JavaScript>
var b = 1;
var c = true;
function helpor_net(){
if(document.all);
if(c == true) {
b++;
}
if(b==100) {
b--;
c = false
}
if(b==10) {
b++;
c = true;
}
if(c == false) {
b--;
}
u.filters.alpha.opacity=0 + b;
setTimeout("helpor_net()",50);
}
helpor_net();
</SCRIPT>