/*	==========================
	Validate for empty string
========================= */
function validate_empty(elemVal, labEmpty){
	if (elemVal ==""){
		alert(labEmpty);
		return false;
	}
	return true;
}

/*	==========================
	Validate given e-mail
========================= */
function validate_email(elem){
	var elemVal = elem.value;

	if (elemVal!=""){
		var reEmail = new RegExp("^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[\\w]$");
		if (!reEmail.test(elemVal)){
			return false;
		}
	}
	return true;	
}
/*	==========================
	Validate given username
========================= */
function validate_username(elem){	
	var elemVal = elem.value;

	if (elemVal!=null)	{		
		if (elemVal.length  >= 4 && elemVal.length  <= 15)		{
			var reUsername = new RegExp("[^\\w]");
			if (reUsername.test(elemVal)){
				return false;
			} else{ 				
				return true;
			}
		} else {
			return false;
		}
	} else
		return false;	
}

/*	==========================
	Validate movie
========================= */

function validate_movie(elem){
	var val = elem.value;

	if (val == "") return true;

	
	return true;
}