$(document).ready(function(){
  var oldvarName = $('#edit-search_theme_form_keys').val();
	$('#edit-search_theme_form_keys').focus(function() {
  	if($(this).val() == oldvarName) $(this).val('');
	});
	$('#edit-search_theme_form_keys').blur(function() {
  	if($(this).val() == '') {
  	 	$(this).val(oldvarName);
  	}
  });
});