// JavaScript Document

function checkEmail(email) {
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (!filter.test(email)) {
		return false;
	}
	else {
		return true;
	}
}

function clearText(field){
		if (field.defaultValue == field.value) field.value = '';
		else if (field.value == '') field.value = field.defaultValue;
		}