function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v;
	if(args[3]!=null) {
		if(v=="visible") {
			show_tab(args[3],true);
		} else {
			show_tab(args[3],false);
		}
	}
  }
}

function show_tab(sid,xs) {
	if(xs) {
		document.getElementById("mu"+sid).src="/images/m"+(sid*2)+".jpg";
	} else {
		document.getElementById("mu"+sid).src="/images/m"+(sid*2-1)+".jpg";
	}
}