Виталий 777,
<!DOCTYPE HTML>
<html>
<head>
<title></title>
<style type="text/css">
div{
width: 300px;
background-color: #FFFF33;
}
</style>
<script language="JavaScript" type="text/javascript">
function fOpenPlus(id){
ele = document.getElementById('divid'+id);
if (ele.style.height=='22px')
{ele.style.height = '100px';}
else{ele.style.height = '22px';}
}
</script>
</head>
<body>
<div class="clip" id="dividF" style="height:22px;" onClick="fOpenPlus('F');">Click me</div>
</body>
</html>