searchform.php

<?php global $cat?>
<form role="search" method="get" id="searchform" action="<?php bloginfo('siteurl'); ?>">
  <div>
    <label class="screen-reader-text" for="s"></label>
    <input type="text" value="Search CLAS" name="s" id="s"  onfocus="this.value = ''" /> 
	
    <select name="cat" id="cat" style="display:none">
		<option value="<?php echo $cat?>" selected="selected"></option>
	</select>
	<?php //wp_dropdown_categories( 'show_option_all=All Categories' ); ?> 
  </div>
</form>