HTML -
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>

<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251" />
<style type="text/css">
body {padding: 0px; margin: 200px 0px 0px 0px;}

ul.main {
width: 543px; height: 150px;
border: 1px solid #C1C1C1; padding: 1px;
list-style-type: none;
}

ul.main li {float: left;}

a.btn {
display: block; width: 135px; height: 80px;
background-color: #E5E5E5; padding-top: 70px;
font-size: 10px; font-family: Verdana, Arial, serif;
text-decoration: none; color: #333;
}

a.btn:hover {background-color: #3c6d98; color: white;}
</style>
<script type="text/javascript">
function changeWidth(param1, param2, param3, param4) {
document.getElementById('btn1').style.width=param1+"px";
document.getElementById('btn2').style.width=param2+"px";
document.getElementById('btn3').style.width=param3+"px";
document.getElementById('btn4').style.width=param4+"px";
}

function normalWidth() {
document.getElementById('btn1').style.width=135+"px";
document.getElementById('btn2').style.width=135+"px";
document.getElementById('btn3').style.width=135+"px";
document.getElementById('btn4').style.width=135+"px";
}
</script>

</head>

<body>
<center>
<ul class="main">
<li style="margin-right: 1px;">
<a href="#" class="btn" id="btn1" onmouseover="changeWidth(180, 120, 120, 120);" onmouseout="normalWidth();"></a>
</li>
<li style="margin-right: 1px;">

<a href="#" class="btn" id="btn2" onmouseover="changeWidth(120, 180, 120, 120);" onmouseout="normalWidth();"> </a>
</li>
<li style="margin-right: 1px;">
<a href="#" class="btn" id="btn3" onmouseover="changeWidth(120, 120, 180, 120);" onmouseout="normalWidth();"></a>
</li>
<li style="margin-right: 0px;">
<a href="#" class="btn" id="btn4" onmouseover="changeWidth(120, 120, 120, 180);" onmouseout="normalWidth();"></a>

</li>
</ul>
</center>
</body>

</html>







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