function loadNextImage(num)
{
if (document.images)
    {
    if (navigator.userAgent.indexOf("Opera") != -1)
        {
        nextimage = new Image();
        nextimage.src = "images/l"+ num +".jpg";
        }
    else if (navigator.userAgent.indexOf("MSIE") != -1 && navigator.userAgent.indexOf("Mac") != -1)
        {
        ;
        }
    else
        {
        nextimage = new Image();
        nextimage.src = "images/l"+ num +".jpg";
        }
    }
}