function guessnum(x)
{
course = 24.00;
document.write(Math.round(course*x*100)/100);
}
function winOpen(url, title)
{
windowprops = "left=0,top=0,width=" + 493 + ", height=" + 740;
windowprops += "menubar=0, status=0, location=0, resizable=1, scrollbars=1";
text = "" + title + "";
text += "![" + title + "](" + url + ")
";
preview = window.open("", "preview", windowprops);
preview.document.open();
preview.document.write(text);
preview.document.close();
}