<!--
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; }
}
//-->