//Função que preenche a div em height=100% no ie6
function fillHeightCompletely()
{
	if (navigator.appName == "Netscape")
	{
		document.getElementById('overlay').style.height = window.innerHeight + "px";
	}
	else
	{
		document.getElementById('overlay').style.height = (document.body.offsetHeight - 4) + "px";
	}
}

//função que chama a overley
function show_overlay_login()
{
	window.scrollTo(0, 0);
	document.getElementById( "login_rca" ).style.display = "block";	
}
function hide_overlay_login() 
{
		document.getElementById( "login_rca" ).style.display = "none";			
}