function isEmpty( inputStr ) { if ( null == inputStr || "" == inputStr ) { return true; } return false; }
function isEmailValid(strEmail){validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;if (strEmail.search(validRegExp) == -1){return false;}return true;}
function isPhoneNumber(elementValue){var phoneNumberPattern = /^\(?(\d{3})\)?[- ]?(\d{3})[- ]?(\d{4})$/;return phoneNumberPattern.test(elementValue);}