TheMatrix
جمعه 11 تیر 1389, 11:39 صبح
نمونه (http://www.alistapart.com/d/footers/footer_variation1.html)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Example 7: Vertical alignment of content with JavaScript & CSS</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<style type="text/css">
<!--
body {
margin: 0;
padding: 0;
font: 12px/1.5 verdana, arial, helvetica, sans-serif;
text-align: center; /* Takes care of horizontal alignment in Internet Explorer */
background-image: url(grid.gif);
}
C#ontent {
position: relative; /* Needed for Safari */
margin: auto; /* Takes care of horizontal alignment in standards compliant browsers */
text-align: left;
width: 200px;
height: 200px;
background-color: #fc0;
}
h1, p {
margin: 0;
padding: 1em;
}
h1 {
font-size: 12px;
line-height: 1.5em;
}
-->
</style>
<script type="text/javascript">
<!--
function getWindowHeight() {
var windowHeight = 0;
if (typeof(window.innerHeight) == 'number') {
windowHeight = window.innerHeight;
}
else {
if (document.documentElement && document.documentElement.clientHeight) {
windowHeight = document.documentElement.clientHeight;
}
else {
if (document.body && document.body.clientHeight) {
windowHeight = document.body.clientHeight;
}
}
}
return windowHeight;
}
function setContent() {
if (document.getElementById) {
var windowHeight = getWindowHeight();
if (windowHeight > 0) {
var contentElement = document.getElementById('content');
var contentHeight = contentElement.offsetHeight;
if (windowHeight - contentHeight > 0) {
contentElement.style.position = 'relative';
contentElement.style.top = ((windowHeight / 2) - (contentHeight / 2)) + 'px';
}
else {
contentElement.style.position = 'static';
}
}
}
}
window.onload = function() {
setContent();
}
window.onresize = function() {
setContent();
}
//-->
</script>
</head>
<body>
<div id="content">
<h1>Content</h1>
<p>This content should be centered in your browser window. CSS is used for horizontal alignment, while scripting is used for vertical alignment.</p>
</div>
</body>
</html>