window.onerror = null;
var netscape = 0;
var goodIE = 0;
browserName = navigator.appName.substring(0,8);
browserVer = parseFloat(navigator.appVersion);
if (browserName == "Netscape" && browserVer >= 3)
{ netscape = 1; }
if (browserName == "Microsof" && browserVer >= 4)
{ goodIE = 1; }

if (netscape || goodIE) {
names = new Array(  "cero" , "uno", "dos", "tres", "cuatro", "cinco", "seis");
        buttons = new Array(26);
for (m=0; m<=25; m++) {
buttons[m] = new Image(); }
        buttons[0].src = "img/bt_contactenos_0.gif";
        buttons[1].src = "img/bt_contactenos_1.gif";
        buttons[2].src = "img/bt_mapa_0.gif";
        buttons[3].src = "img/bt_mapa_1.gif";
        buttons[4].src = "img/bt_inicio_0.gif";
        buttons[5].src = "img/bt_inicio_1.gif";
        buttons[6].src = "img/bt_top_0.gif";
        buttons[7].src = "img/bt_top_1.gif";
        buttons[8].src = "img/bt_map_0.gif";
        buttons[9].src = "img/bt_map_1.gif";
        buttons[10].src = "img/bt_contact_0.gif";
        buttons[11].src = "img/bt_contact_1.gif";
        buttons[12].src = "img/bt_home_0.gif";
        buttons[13].src = "img/bt_home_1.gif";
        }
        


function swap(des,num) {
if (netscape || goodIE) {
document.images[names[des]].src = buttons[num].src;  }}