<form id="searchform" method="get" action="search.php">
<input class="textbox" value="Search" name="s" id="s" onfocus="if (this.value == 'Search') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Search';}" type="text">
<input type="submit" id="searchsubmit" value="" class="searchsubmit" />
</form>