function expandenov(id){
var obj1=document.getElementById('novctl'+id)
var obj2=document.getElementById('novprev'+id)
var obj3=document.getElementById('novtxt'+id)
obj2.style.display = 'none';
obj3.style.display = 'block';
obj1.innerHTML="<a href=\"javascript:escondenov('"+id+"');\"><img alt=\"menos-\" src=\"imagens/menos.gif\" border=\"0\"></a>";
}

function escondenov(id){
var obj1=document.getElementById('novctl'+id)
var obj2=document.getElementById('novprev'+id)
var obj3=document.getElementById('novtxt'+id)

obj3.style.display = 'none';
obj2.style.display = 'block';
obj1.innerHTML="<a href=\"javascript:expandenov('"+id+"');\"><img alt=\"mais+\" src=\"imagens/mais.gif\" border=\"0\"></a>";
}