鼠标移动 图片透明度变化，没有变化（）---多物体动画
web控制台提示filter:alpha(opacity:100);无效
<style>
*{
margin:0;
padding:0;
}
div{
width:200px;
height:150px;
background:url(test/ima/weixin.png) no-repeat;
filter:alpha(opacity:90);
opacity:1;
float:left;
}
</style>
<script>
window.onload=function(){
var odiv=document.getElementsByTagName("div");
for(var i=0;i<odiv.length;i++){
odiv[i].onmouseover=function(){
odiv[i].startMove(this,50);
}
odiv[i].onmouseout=function(){
startMove(this,100);
}
}
}
var timer=null;
var alpha=100;
function startMove(obj,iTarget){
//var odiv=document.getElementsByTagName("div");
clearInterval(obj.timer);
obj.timer=setInterval(function(){
if(alpha>iTarget){
speed=-10;
}else{
speed=10;
}
if(alpha==iTarget){
clearInterval(obj.timer);
}else{
alpha+=speed;
obj.style.filter='alpha(opacity:'+alpha+')';
obj.style.opacity=alpha/100;
}
},10)
}
</script></head>
<body>
<div id="div1"></div>
<div id="div2"></div>
<div id="div3"></div>
<div id="div4"></div>
</body>
</html>
