function processTextAreaLength(object, length) {
	if(object.value.length > length) {
		object.value = object.value.substring(0,length);
	}
}
function checkEmail(fieldName) {
	var email = document.getElementById(fieldName);
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	
	if (!filter.test(email.value)) {
		return false;				
	}
	
	return true;
}