How to remove placeholder on focus

				
					<script type="text/javascript">
jQuery(document).ready(function() {
	jQuery('input,textarea').focus(function(){
   jQuery(this).data('placeholder',jQuery(this).attr('placeholder'))
          .attr('placeholder','');
}).blur(function(){
   jQuery(this).attr('placeholder',jQuery(this).data('placeholder'));
});
});  
</script>