function Vacio(str)
{
	if(str == "")
		return true;
	else
		return false;
}
function Alfa(str)
{
	if(str.search(/^[a-zA-ZΑΙΝΣΪαινσϊ,-_'\s]+$/ig))
		return false;
	else
		return true;
}
function Num(str)
{
	if(str.search(/^\d+$/ig))
		return false;
	else
		return true;
}
function NumDec(str)
{
	if(str.search(/^\d+.\d+$/ig))
		return false;
	else
		return true;
}
function vRFC(str)
{
	//var patron_rfc = "/^\w\w\w(\w|-)?\d\d\d\d\d\d\w\w\w$";
	if(str.search(/^\w\w\w(\w|-)?(-)?\d\d\d\d\d\d(-)?\w\w\w$/ig))
		return false;
	else
		return true;
}
function Email(str)
{
	//var patron_rfc = "/^\w\w\w(\w|-)?\d\d\d\d\d\d\w\w\w$";
	if(str.search(/^[a-zA-Z0-9._\s]+@[a-zA-Z0-9-_\s]+.[a-zA-Z0-9_\s]+.?[a-zA-Z0-9_\s]*$/ig))
		return false;
	else
		return true;
}
function AlfaNum(str)
{
	if(Alfa(str) || Num(str))
		return true;
	else
		return false;
}