function SwitchMenu(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
		if(el.style.display != "block"){ //DynamicDrive.com change
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}

function checkAlp(dstText){
	data = dstText.match(/[^A-Za-z]/gi);
	if (data || !dstText) return false;
	return true;
}

function check_email(email){
	var len = email.length;
	return (len==0 || !(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email)) )?false:true;
}