var agt = navigator.userAgent.toLowerCase();
var is_netscape  = (agt.indexOf('netscape')!=-1);
var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_mac = (agt.indexOf("mac")!=-1);
var tot_menu = new Array;

function cambiar (name, on) {
if (parseInt(navigator.appVersion.substring(0,1))>=3) {
    image = eval(name + (on == 1 ? "on.src" : "off.src"));
    if (image != "") {
    	document[name].src = image;
    }
  }
}

function MM_findObj (n, d) {
  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 && d.getElementById) x=d.getElementById(n); return x;
}

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

function escolle (n) {
  MM_showHideLayers(n,"","show");
}

function oculta (n) {
  for (i=0;i<tot_menu.length;i++) {
    MM_showHideLayers(tot_menu[i],"","hide");
  }
}

function abrirlibro () {
	window.open("/relacionate/librovisitas.php","Libro","width=600,height=400,resizable=no,scrollbars=yes,status=no,toolbar=no,menubar=no,titlebar=no");
}

function repe (nome, ext, on) {
	esc = (on == 1 ? "on.src" : "off.src");
	obj = MM_findObj(nome+ext);
 	obj.src = eval(nome+esc);
}
function cambia_foto () {
	var i;
	total = fotos_apartados.length;

	if ((foto_actual+1) > total) {
		foto_actual = 0;
	}

	for (i=0; i<fotos_apartados.length; i++) {
		if (i == foto_actual) {
			escollida = MM_showHideLayers("foto_apartados_"+i,"","show");
		} else {
			escollida = MM_showHideLayers("foto_apartados_"+i,"","hide");
		}
	}

	foto_actual++;
}