function abrir(){
document.cad.email.value = document.cad.email.value.toLowerCase();
var cnome = document.cad.nome.value;
var cmail = document.cad.email.value;
var larg= 300;
var alt= 276;
var posx= (screen.width-larg)/2;
var posy= (screen.height-alt)/2
window.open("./scripts/cadastro/cadastrarhome.php?nome="+cnome + "&email=" + cmail  ,"","menubar=no,location=no,toolbar=no,status=no,scrollbars=no,resizable=no,width="+larg+",height="+alt+",left="+posx+",top="+posy)
}