// error handling
function stopError()
{
        return true;
}
window.onerror = stopError;
// test for support of rollover images
if (document.images)
{
        roll = 1;
}
else
{
        roll = 0;
}
// rollover buttons
if (roll)
{
        but5 = new Image(340,289) ;
        but5.src = "graphics/screen5.gif";
        but4 = new Image(340,289) ;
        but4.src = "graphics/screen4.gif";

        but3 = new Image(340,289) ;
        but3.src = "graphics/screen3.gif";
        but2 = new Image(340,289) ;
        but2.src = "graphics/screen2.gif";



        but1 = new Image(340,289) ;
        but1.src = "graphics/screen1.gif";
        but0 = new Image(340,289) ;
        but0.src = "graphics/screen0.gif";
}
function hiLite(imgDocID,imgObjName)
{
        if (roll)
        {
                document.images[imgDocID].src = eval(imgObjName + ".src");
        }
}