var xWin=0;
    var aOnImg = new Array(4);
        aOnImg[0] = new Image();	aOnImg[0].src = "/images/service/ui_act.gif";
        aOnImg[1] = new Image();	aOnImg[1].src = "/images/service/sto_act.gif";
        aOnImg[2] = new Image();	aOnImg[2].src = "/images/service/wm_act.gif";
        aOnImg[3] = new Image();	aOnImg[3].src = "/images/service/mrtg_act.gif";
    var aOffImg  = new Array(4);
        aOffImg[0] = new Image();	aOffImg[0].src = "/images/service/ui.gif";
        aOffImg[1] = new Image();	aOffImg[1].src = "/images/service/sto.gif";
        aOffImg[2] = new Image();	aOffImg[2].src = "/images/service/wm.gif";
        aOffImg[3] = new Image();	aOffImg[3].src = "/images/service/mrtg.gif";

    function fOnImg(name, i) { document.images[name].src = aOnImg[i].src; }
    function fOffImg(name, i) { document.images[name].src = aOffImg[i].src; }