ami_moor,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<style
type="text/css">
.inp{background:#fbfae1}
.inp:focus{background:#F0F0F0}
.text{background:#FFF}
</style>
</head>
<body>
<input class="inp" style="width: 523px;" type="text" name="name" onblur="this.className = this.value ? 'text' : 'inp'" />
</body>
</html>