function ChecaMail(mail){
    var er = new RegExp(/^[A-Za-z0-9_\-\.]+@[A-Za-z0-9_\-\.]{2,}\.[A-Za-z0-9]{2,}(\.[A-Za-z0-9])?/);
    if(typeof(mail) == "string"){
        if(er.test(mail)){ return true; }
    }else if(typeof(mail) == "object"){
        if(er.test(mail.value)){
            return true;
        }
    }else{
        return false;
    }
}

function MascaraFormata(src, mascara) {
	var campo   = src.value.length;
	var saida   = mascara.substring(0,1);
	var texto   = mascara.substring(campo);
	if(texto.substring(0,1) != saida) {
		src.value += texto.substring(0,1);
	}
}

function sonum(e) {
	if(window.event) {
		// for IE, e.keyCode or window.event.keyCode can be used
		key = e.keyCode;
	} else if(e.which) {
		// netscape
		key = e.which;
	} else {
		// no event, so pass through
		return true;
	}
	if ((key > 47 && key < 58) || (key == 8 || key == 9 || key == 127)){
	}else{
		return false;
	}
}