index = Math.floor(Math.random() * book.length);
document.write("<div class='liste'>");
document.write("<p class='q'>")
document.write(question[index]);
document.write("</p>");
document.write("<p class='a'>" + "Svaret finder du i \<br \/\>\<a href='\/wwwbog\/udgave2\/'>" + book[index] + "\<\/a\>");
document.write("</p></div>");