function Fecha()
{
	if(document.getElementById('view_image'))
	{
		document.getElementById('view_image').style.display='none';		
		document.getElementById('sombra_fundo').style.display='none';		
	}
	MostraCombo();
}

function MostraCombo()
{
	qtdSelect = document.getElementsByTagName("select");
	for (i = 0; i < qtdSelect.length; i++)
	{
  		objSelect = qtdSelect[i];
  		objSelect.style.visibility = "visible";
  	}
}

function EscondeCombo()
{
	qtdSelect = document.getElementsByTagName("select");
	for (i = 0; i < qtdSelect.length; i++)
	{
  		objSelect = qtdSelect[i];
  		objSelect.style.visibility = "hidden";
  		
  		if(objSelect.id == "nao_oculta")
  		{
  			objSelect.style.visibility = "visible";
  		}
  	}
}