function SendForm() {
var frm = document.cadastro;
	
		
	
	if (isNull(frm.email.value)) {
		alert("Por favor, preencha o email");
		frm.email.focus();	
		return;
	}
	
	
	if (!isMail(frm.email.value)) {
		alert("Por favor, preencha o email corretamente");
		frm.email.focus();	
		return;
	}
	
	
	
	
	frm.submit();
}