(function($){ 
jQuery.fn.reSetValue = function() {
	return this.each(function() { 
		var el = $(this);  
		var defVal = el.val();
		el.focus(function() {
			var newVal = el.val();
			if (defVal==newVal) el.val('');
		}).blur(function() {
			if(el.val()=='') el.val(defVal);
		});
	});
};
})(jQuery);