function validate_required(field,defvaluez,alerttxt){
		with (field){
			if (value==null || value=="" || value==defvaluez) {
				showError(alerttxt);
				return false
			}
			else {
			return true
			}
		}
	}
	function validatePass(one,two,alerttxt){
			if (one==null || one=="" || one!=two) {
				showError(alerttxt);
				return false
			}else {
				return true
			}
	}
	function validate_email(field,alerttxt){
		with (field){
			apos=value.indexOf("@")
			dotpos=value.lastIndexOf(".")
			if (apos<1||dotpos-apos<2){
				showError(alerttxt);
				return false
			}
			else {
			return true
			}
		}
	}