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; }
}
function MM_goToURL() { //v3.0
  var i, args=MM_goToURL.arguments; document.MM_returnValue = false;
  for (i=0; i<(args.length-1); i+=2) eval(args[i]+".location='"+args[i+1]+"'");
}


function showmenu_item(sid,num)
{
whichEl = eval("zzw" + sid);
for (i=1;i<=num;i++){ 
    if(i!=sid){
	which = eval("zzw" + i);
	which.style.display="none";
    }
}
if (whichEl.style.display == "none")
{
eval("zzw" + sid + ".style.display=\"\";");
}
else
{
eval("zzw" + sid + ".style.display=\"none\";");
}
}