function sub_preload()
{
        var imagearray= new Array("../images/menus/academics/over_03.gif"
        						, "../images/menus/academics/over_04.gif"
        						, "../images/menus/academics/over_05.gif"
        						, "../images/menus/academics/over_06.gif"
        						, "../images/menus/academics/over_07.gif"
        						, "../images/menus/academics/over_08.gif"
        						);

        for(var x = 0; x < imagearray.length; x++)
        {
                var preloadimage = new Image(20, 20);
                preloadimage.src = imagearray[x];
        }
}