if (document.images) {
	menu1On = new Image();
    menu1On.src = "img/topmenu01on.gif";
	menu2On = new Image();
    menu2On.src = "img/topmenu02on.gif";
	menu3On = new Image();
    menu3On.src = "img/topmenu03on.gif";
	menu4On = new Image();
    menu4On.src = "img/topmenu04on.gif";
	menu5On = new Image();
    menu5On.src = "img/topmenu05on.gif";
	menu6On = new Image();
    menu6On.src = "img/topmenu06on.gif";
	menu7On = new Image();
    menu7On.src = "img/topmenu07on.gif";
	menu8On = new Image();
    menu8On.src = "img/topmenu08on.gif";
	
    menu1Off = new Image();
    menu1Off.src = "img/topmenu01.gif";
    menu2Off = new Image();
    menu2Off.src = "img/topmenu02.gif";
    menu3Off = new Image();
    menu3Off.src = "img/topmenu03.gif";
    menu4Off = new Image();
    menu4Off.src = "img/topmenu04.gif";
    menu5Off = new Image();
    menu5Off.src = "img/topmenu05.gif";
    menu6Off = new Image();
    menu6Off.src = "img/topmenu06.gif";
    menu7Off = new Image();
    menu7Off.src = "img/topmenu07.gif";
    menu8Off = new Image();
    menu8Off.src = "img/topmenu08.gif";
	
    }

function ShowHide(imgDocID,imgObjName) {
        if (document.images) 
        document.images[imgDocID].src = eval(imgObjName + ".src")
}