function getCookieVal (offset) {
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr == -1)
		endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while (i < clen) {
		var j = i + alen;
		if (document.cookie.substring(i, j) == arg)
			return getCookieVal (j);
			i = document.cookie.indexOf(" ", i) + 1;
		if (i == 0)
			break;
		}
	return null;
}

function SetCookie (name, value) {
	var argv = SetCookie.arguments;
	var argc = SetCookie.arguments.length;
	var expires = (2 < argc) ? argv[2] : null;
	var path = (3 < argc) ? argv[3] : null;
	var domain = (4 < argc) ? argv[4] : null;
	var secure = (5 < argc) ? argv[5] : false;
	document.cookie = name + "=" + escape (value) +
	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
	((path == null) ? "" : ("; path=" + path)) +
	((domain == null) ? "" : ("; domain=" + domain)) +
	((secure == true) ? "; secure" : "");
}

function displayInfo() {
	var expdate = new Date();
	var visit;
	expdate.setTime(expdate.getTime() +  (24 * 60 * 60 * 1000 * 365));
	if(!(visit = GetCookie("visit")))
		visit = 0;
		visit++;
		SetCookie("visit", visit, expdate, "/", null, false);
		var message;
	if(visit == 1)
		ativarMensagemAbsoluta(true);		
}	

function ativarMensagemAbsoluta(opcao){
	if(opcao){
		divAntiClick.style.display = '';
		divMensagemAbsoluta.style.display = '';
		
		var alturaTela = screen.height;
		divAntiClick.style.height = alturaTela;
		var larguraTela = screen.width;
		divAntiClick.style.width = larguraTela;
		
		document.body.parentNode.style.height = '120%';
		document.body.parentNode.style.overflow = 'hidden';
		window.scrollTo(0,0); 
			
	}else{
		//setTimeout("desAtivarCarga()",1000);
		desAtivarMensagemAbsoluta();
	}
}
	
function desAtivarMensagemAbsoluta(){
	divAntiClick.style.display = 'none';
	divMensagemAbsoluta.style.display = 'none';
	
	document.body.parentNode.style.height = '';
	document.body.parentNode.style.overflow = 'auto';
}