function Val(field,tipo)
{
if (tipo=="txt")pat=/[0-9]/;
if (tipo=="num")pat=/[^0-9]/;
if (tipo=="tel")pat=/[^0-9\-]/;
if (tipo=="dt")pat=/[^0-9\/]/;
if (tipo=="dec")pat=/[^0-9\,]/;
idx = field.value.search( pat );
while ( idx > -1 ) {field.value = field.value.replace( pat, '' ); idx = field.value.search( pat );}
}

function validaemail(pStr)
{
	if (pStr != ""){
		reEmail = /^[\w!#$%&*+\/=?^`{|}~-]+(\.[\w!#$%&*+\/=?^`{|}~-]+)*@(([\w-]+\.)+[A-Za-z]{2,6}|\[\d{1,3}(\.\d{1,3}){3}\])$/;
		if (reEmail.test(pStr) && pStr.length>0) {return true;} else{return false;}
	}
}