var pContestadas = 0;
var pCorrectas = 0;
function T() 
{
	if ( !window.event ) {
		return false;
	}
	var oInput = window.event.srcElement;
	if ( document.all("s_" + oInput.id).style.visibility != "visible" ) {
		pContestadas++;
		if ( document.all("s_" + oInput.id).innerText == "ü" ) {
			pCorrectas++;
		}
		document.all("preguntas_contestadas").innerText = pContestadas;
		document.all("preguntas_correctas").innerText = pCorrectas;
		for ( nCont = 0; nCont < document.all(oInput.name).length; nCont++ ) {
			document.all("s_" + document.all(oInput.name).item(nCont).id).style.visibility = "visible";
			if ( document.all(oInput.name).item(nCont).id != oInput.id ) {
				document.all(oInput.name).item(nCont).disabled = true;
			}
		}
		document.body.focus();
	}
	return true;
}
// Para Gecko y otros navegadores
if ( ! document.all ) {
	var nInterval = 0;
	var cHTML = "";
	nInterval = window.setInterval( "Cargado();", 100 );
}
function Cargado()
{
	var aHR = document.body.getElementsByTagName("hr")
	if ( aHR[0] ) {
		var aP = document.body.getElementsByTagName("p")
		cHTML = aP[aP.length-1].innerHTML;
		aP[aP.length-1].innerHTML = '<input type="button" value="Comprobar" onclick="Comprobar()">';
		window.clearInterval(nInterval);
	}
}
function Comprobar()
{
	var aP = document.body.getElementsByTagName("p")
	aP[aP.length-1].innerHTML = cHTML;
	aSpan = document.body.getElementsByTagName("span");
	for ( nCont = 0; nCont < aSpan.length; nCont++ ) {
		if ( aSpan[nCont].id.substr(0,2) == "s_" ) {
			if ( aSpan[nCont].className == "a" ) {
				if ( document.getElementById(aSpan[nCont].id.substr(2)).checked ) {
					pCorrectas++;
				}
				aSpan[nCont].innerHTML = "=";
			} else {
				aSpan[nCont].innerHTML = "X";
			}
			aSpan[nCont].style.visibility = "visible";
			if ( !document.getElementById(aSpan[nCont].id.substr(2)).checked ) {
				document.getElementById(aSpan[nCont].id.substr(2)).disabled = true;
			} else {
				pContestadas++;
			}
		}
	}
	document.getElementById("preguntas_contestadas").innerHTML = pContestadas;
	document.getElementById("preguntas_correctas").innerHTML = pCorrectas;
	return true;
}