var digitsOnly = /[1234567890]/g; 
	var integerOnly = /[0-9\.]/g; 
	var alphaOnly = /[A-Z]/g; 
	function restrictCharacters(myfield, e, restrictionType) { 
	if (!e) var e = window.event 
	if (e.keyCode) code = e.keyCode; 
	else if (e.which) code = e.which; 
	var character = String.fromCharCode(code); 
	// if they pressed esc... remove focus from field... 
	if (code==27) { this.blur(); return false; } 
	// ignore if they are press other keys 
	// strange because code: 39 is the down key AND ' key... 
	// and DEL also equals . 
	if (!e.ctrlKey && code!=9 && code!=8 && code!=36 && code!=37 && code!=38 && (code!=39 || (code==39 && character=="'")) && code!=40) { 
	if (character.match(restrictionType)) { 
	return true; 
	} else { 
	return false; 
	} 
	} 
	} 

	function validate_email(element){
			var emailRegxp = /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/;
			var email = document.getElementById(element).value;
			if (emailRegxp.test(email) != true){
				return false;
			}	
			return true;
		}