function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeimages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeimages.arguments.length; i+=2) {
			document[changeimages.arguments[i]].src = changeimages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadimages() {
	if (document.images) {
		somos_over = newImage("img/quienes_somos_h.gif");
		flota_over = newImage("img/nuestra_flota_h.gif");
		tarifas_over = newImage("img/tarifas_h.gif");
		contacto_over = newImage("img/contacto_h.gif");
		rutas_over = newImage("img/rutas_h.gif");
		somos_n = newImage("img/quienes_somos.gif");
		flota_n = newImage("img/nuestra_flota.gif");
		tarifas_n = newImage("img/tarifas.gif");
		contacto_n = newImage("img/contacto.gif");
		rutas_n = newImage("img/rutas.gif");
		
		somos_over1 = newImage("img/quienes_somos1_h.gif");
		flota_over1 = newImage("img/nuestra_flota1_h.gif");
		tarifas_over1 = newImage("img/tarifas1_h.gif");
		contacto_over1 = newImage("img/contacto1_h.gif");
		rutas_over1 = newImage("img/rutas1_h.gif");
		somos_n1 = newImage("img/quienes_somos1.gif");
		flota_n1 = newImage("img/nuestra_flota1.gif");
		tarifas_n1 = newImage("img/tarifas1.gif");
		contacto_n1 = newImage("img/contacto1.gif");
		rutas_n1 = newImage("img/rutas1.gif");
		preloadFlag = true;
	}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  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 ampliar_foto(foto,titulo,copyright) { 
	var tope=screen.height;
	var lefte=screen.width;
	var ancho=500;
	var alto=380;

	tope=(tope/2)-(alto/2);
	lefte=(lefte/2)-(ancho/2);

	newwin = window.open("ver_foto.php?foto="+foto+"&titulo="+titulo+"&copyright="+copyright,"zoomfoto", 	"resizable=yes,scrollbars=auto,width="+ancho+",height="+alto+",top="+tope+",left="+lefte);
	newwin.focus();
}

function ventana_8nudos(url,ancho,alto) {
	
	var tope=screen.height;
	var lefte=screen.width;

	tope=(tope/2)-(alto/2);
	lefte=(lefte/2)-(ancho/2);

	w8nudos = window.open(url, "w8nudos", "width="+ancho+",height="+alto+",top="+tope+",left="+lefte+",toolbar=no,scrollbars=yes");
	w8nudos.focus();
}


function resize(x, y) {
var tope=screen.height;
var lefte=screen.width;

resizeTo (x,y);

tope=(tope/2)-((y)/2);
lefte=(lefte/2)-((x)/2);

moveTo (lefte,tope);
}