function checkEmail(field) {
	var emailPat = /^['_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.(([a-zA-Z]{2,3})|(aero|coop|info|museum|name))$/;
	var matchArray = field.value.match(emailPat);
	if (matchArray == null) {
		return false;
	}
	var IPArray = matchArray[2].match(/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/);
	if (IPArray != null) {
		for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				return false;
			}
	   }
	}
	return true;
}

function checkPhone(field) {
	var valid = '0123456789-'
	var temp;
	for (var i = 0; i < field.value.length; i++) {
		temp = '' + field.value.substring(i, i+1);
		if (valid.indexOf(temp) == '-1') { return false };
	}
	if ((field.value.charAt(3) != '-') || (field.value.charAt(7) != '-') || (field.value.length != 12)) {
		return false;	
	}
	return true;
}