function isBlank(objField) {
	if(objField.value != null) {
		var strField = objField.value;
		var intCount;
		for (intCount = 0;intCount < strField.length;intCount++)
			if (strField.substr(intCount, 1) != " ") return 0;
	}
	return 1;
}

function isValidPhone(objPhone) {
	var MAX_LEN = 10;
	
	if (objPhone.value != null) {
		var strPhone = objPhone.value + "";
		var intLen = strPhone.length;
		var intCount;var strResult = "";
		if(isBlank(objPhone)) return true;
		if (intLen < MAX_LEN) {
			alert("Please enter a 10 digit phone number.");
			return false;
		}
		else {
			for (intCount = 0;intCount < intLen;intCount++) {
				if(!isNaN(strPhone.substr(intCount, 1)) && strPhone.substr(intCount, 1) != " ")
					strResult += strPhone.substr(intCount, 1);
			}
			if ((strResult.length < MAX_LEN || strResult.length > MAX_LEN)|| isNaN(strResult)) {
				alert("Please enter valid 10 digit phone number.");
				return false;
			}
			objPhone.value = "(" + strResult.substr(0, 3) + ") " + strResult.substr(3, 3) + "-" + strResult.substr(6);
			return true;
		}
	}
	else {
		alert("Error: can't find field!");
	}
	return false;
}

function isValidEmail(objField) {
	if (objField.value != null) {
		if(objField.value.search(/\S*@\S*\.\S*/) < 0) {
			alert("Please enter a valid email address.");
			return false;
		}
	}
	return true;
}