function MM_formtCep(e,src,mask) {
    if(window.event) { _TXT = e.keyCode; }
    else if(e.which) { _TXT = e.which; }
    if(_TXT > 47 && _TXT < 58) {
var i = src.value.length; var saida = mask.substring(0,1); var texto = mask.substring(i)
if (texto.substring(0,1) != saida) { src.value += texto.substring(0,1); }
    return true; } else { if (_TXT != 8) { return false; }
else { return true; }
    }
}

function SomenteNumero(e){
    var tecla=(window.event)?event.keyCode:e.which;
    if((tecla > 47 && tecla < 58)) return true;
    else{
    if (tecla != 8) return false;
    else return true;
    }
}