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适应于各种屏幕的分辨率的

2013-11-05 23:09 260 查看

<html>
<head>
<title></title>
<style type="text/css">
.conent
{
width: 980px;
height:680px;
border:1px solid #134579;
}
</style>
<script type="text/javascript">
var marginLeft;
var marginTop;
window.onload = function () {
marginTop = 0;
marginLeft = 0;
rePoint();
}
window.onresize = function () {
rePoint();
}
function rePoint() {
var marginTopIndex = parseInt((document.body.clientHeight - 680) / 2);
var marginLeftIndex = parseInt((document.body.clientWidth - 980) / 2);
if (marginLeftIndex < 0) {
marginLeftIndex = 0;
}
if (marginTopIndex < 0) {
marginTopIndex = 0;
}
if (marginLeft == marginLeftIndex && marginTop == marginTopIndex) {
return;
}
marginLeft = marginLeftIndex;
marginTop = marginTopIndex;
document.getElementById("mainDiv").style.marginLeft = marginLeft + "px";
document.getElementById("mainDiv").style.marginTop = marginTop + "px";
}
</script>
</head>
<body>
<div id="mainDiv" class="conent">
适应于各种屏幕的分辨率的div
</div>
</body>
</html>

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