var timeout
dom = (document.getElementById)? true : false;
nn4 = (document.layers)? true : false;
ie4 = (document.all && !dom)? true : false;

function show(what){
        if(dom){
        hideAll();
        document.getElementById(what).style.visibility = "visible";}
        else if(ie4){
        hideAll();
        document.all[what].style.visibility = "visible";}
        else if(nn4){
        hideAll();
        document.layers[what].visibility = "show";
        }
}

function show2(what,search){
        if(dom){
        hideAll();
        document.getElementById(what).style.visibility = "visible";}
        else if(ie4){
        hideAll();
        document.all[what].style.visibility = "visible";}
        else if(nn4){
        hideAll();
        document.layers[search].visibility = "hide";
        document.layers[what].visibility = "show";
        }
}

function hideAll(){
        if(dom){
        document.getElementById('submenu6').style.visibility = "hidden";
        document.getElementById('submenu2').style.visibility = "hidden";
        document.getElementById('submenu5').style.visibility = "hidden";
        }
        else if(ie4){
        document.all['submenu6'].style.visibility = "hidden";
        document.all['submenu2'].style.visibility = "hidden";
        document.all['submenu5'].style.visibility = "hidden";
        }
        else if(nn4){
        document.layers['submenu6'].visibility = "hide";
        document.layers['submenu2'].visibility = "hide";
        document.layers['submenu5'].visibility = "hide";
        }
}