function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}


function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;

  w4_aeg.style.visibility='hidden';
  w4_rifle.style.visibility='hidden';
  w4_shotgun.style.visibility='hidden';
  w4_handgun.style.visibility='hidden';
  w4_grenade_launcher.style.visibility='hidden';
  w4_custom.style.visibility='hidden';
  w4_acc.style.visibility='hidden';
  w4_up.style.visibility='hidden';
  w4_mp.style.visibility='hidden';
  w4_wge.style.visibility='hidden';
  w4_war4.style.visibility='hidden';

  for (i=0; i<(args.length-2); i+=3)
    if ((obj=MM_findObj(args[i]))!=null) {
      v=args[i+2];
      if (obj.style) {
        obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v;
      }
    obj.visibility=v;
  }
}