function KeyDownHandler(e, btn)
{            
    if (document.all) // Internet Explorer
        var tecla = event.keyCode;
    else if(document.layers)// Nestcape
        var tecla = e.which;
    else
        var tecla = e.which;
             
    // process only the Enter key
    if (tecla == 13)
    {    
        document.getElementById(btn).click();
        return false;            
    }        
    
    return true;
}


function getObject(nome_popup)
{
	var ns = navigator.appName == "Netscape";
	var ns4 = (ns && parseInt(navigator.appVersion) == 4);
	var ns5 = (ns && parseInt(navigator.appVersion) > 4); 

	if (ns4)
	   tDiv = document[nome_popup];
	else if (ns5)
	   tDiv = document.getElementById(nome_popup)
	else
	  tDiv = document.all[nome_popup];
	  
	return tDiv;
}

function Exibir(div)
{
    getObject(div).style.display = 'block';
}

function esconder(div)
{
    getObject(div).style.display = 'none';
}

function Esconder(div)
{
    esconder(div);
}