/*
	Validation class
*/
function Valid(ob) {
	this.main = ob;
	
	this.isEmail = function(addr) {
		var emailFilter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (!emailFilter.test(addr))
			return false;
		return true;
	}
}