function popup(page)
{
po=window.open(page,"pop1","width=550,height=400,directories=no,toolbar=no,location=no,menubar=no,scrollbars=yes,status=no");
po.focus();
}

function Engine(question, answer)
{
if (answer != ans[question])
        {
        if (!done[question])
                {
                done[question] = -1;
                document.getElementById("ua"+question+"a").disabled=true;
                document.getElementById("ua"+question+"b").disabled=true;
                document.getElementById("ua"+question+"c").disabled=true;
                document.getElementById("ua"+question+"d").disabled=true;
                document.getElementById("falsch"+question).style.display="inline";
                document.getElementById("desc"+question).style.display="block";
                }
                else
                {
                document.form1.p.value=score;
                }
        }
        else
        {
        if (!done[question])
                {
                done[question] = -1;
                score+=pu[question];
                document.form1.p.value= + score;
                document.getElementById("ua"+question+"a").disabled=true;
                document.getElementById("ua"+question+"b").disabled=true;
                document.getElementById("ua"+question+"c").disabled=true;
                document.getElementById("ua"+question+"d").disabled=true;
                document.getElementById("richtig"+question).style.display="inline";
                document.getElementById("desc"+question).style.display="block";
                }
                else
                {
                alert("Du hast diese Frage schon beantwortet!");
                }
        }
}