var ns, ie, ns6, ffShow, ffHide;
if (document.all)    {ns=0;ie=1;ns6=0;ffShow="visible";ffHide="hidden";}
if (document.getElementById&&!document.all)    {ns=0;ie=0;ns6=1;ffShow="visible";ffHide="hidden";}
if (document.layers) {ns=1;ie=0;ns6=0;ffShow="show";ffHide="hide";}	
var op=ie&&navigator.userAgent.indexOf("Opera")!=-1
var activeMenu = "tom";


// ############# fäller ner droppmenyn ################
function menuDown(vilken, swap){ 
if (ns) document.layers[vilken].visibility = ffShow;
else document.getElementById(vilken).style.visibility = ffShow;

document.getElementById(swap).src="img/" + vilken + "_hi.gif";
activeMenu = vilken;
 
}

// ############# fäller up droppmenyn ################
function menuUp(vilken, swap){ 
 if (ns) document.layers[vilken].visibility = ffHide;
 else document.getElementById(vilken).style.visibility = ffHide;

document.getElementById(swap).src="img/" + vilken + ".gif";
activeMenu = "tom";

}