if (typeof($)!='function') {
	function $(id) { return document.getElementById(id); }
}

String.prototype.isEmailAddress = function() {
 	var objRegExp  = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*\.(\w{2}|(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum))$/;
  	return objRegExp.test(this);
};

	function limitText(limitField, limitCount, limitNum) {
		try{
			if (limitField.value.length > limitNum) {
				limitField.value = limitField.value.substring(0, limitNum);
			}else{
				limitCount.innerHTML = limitNum - limitField.value.length;
			}

		} catch(e) {  }

	};