$.fn.showInfo = function() {
	return this.each(function(){
		if(this.title != "" && this.title != undefined) {
			$(this).after("<img class=\"tip\" src=\"\/ico\/tip.png\" title=\""+this.title+"\" \/>");
			this.title = "";
		}
	});
};
$.fn.showRequired = function() {
	return this.each(function(){
		$(this).filter(".req").after('<img class="tip" src="/ico/req.png" title="This field is required." />');
	});
}