var getElementBy = document.getElementById!=null

function LAMPAD_trovaOggetto(n, d) { //v1.00
	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=LAMPAD_trovaOggetto(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function LAMPAD_mostraNascondiLivelli() { //v1.0
	var i,p,v,obj,args=LAMPAD_mostraNascondiLivelli.arguments;
	for (i=0; i<(args.length-2); i+=3) if ((obj=LAMPAD_trovaOggetto(args[i]))!=null) {
		v=args[i+2];
		if (obj.style) {
			obj=obj.style;
			v=(v=='show')?'visible':(v=='hide')?'hidden':v;
		}
		obj.visibility=v;
	}
}