function newImage(arg) {
    if (document.images) {
        rslt = new Image();
        rslt.src = arg;
        return rslt;
    }
}

function changeImages() {
    if (document.images) {
        var img;
        for (var i=0; i<changeImages.arguments.length; i+=2) {
            img = null;
            if (document.layers) {
                img = findElement(changeImages.arguments[i],0);
            }
            else {
                img = document.images[changeImages.arguments[i]];
            }
            if (img) {
                img.src = changeImages.arguments[i+1];
            }
        }
    }
}

var preloadFlag = false;
function preloadImages() {
    if (document.images) {
        up_over = newImage("media/up_arrow-over.gif");
		down_over = newImage("media/down_arrow-over.gif");
		footer_logos_01_over = newImage("media/footer_logos_01-over.gif");
		footer_logos_02_over = newImage("media/footer_logos_02-over.gif");
		footer_logos_03_over = newImage("media/footer_logos_03-over.gif");
        preloadFlag = true;
    }
}

var timer_id;
function scroll_iframe(frm,inc,dir) {
  if (timer_id) clearTimeout(timer_id);
  if (window.frames[frm]) {
    if (dir == "v") window.frames[frm].scrollBy(0, inc);
    else window.frames[frm].scrollBy(inc, 0);
    timer_id = setTimeout("scroll_iframe('" + frm + "'," + inc + ",'" + dir + "')", 20);
  }
}

function stopScroll() { if (timer_id) clearTimeout(timer_id); }