var loginHotkey=49; // the number "1"
var loginDestination="http://www.travisa.com/login/";

var fmHotkey=120; // lower case letter "x"
var fmDestination="https://www.e-passports.com/travisa/startup.htm";

if (document.layers) {
    document.captureEvents(Event.KEYPRESS)
}

function backhome(e) {
    if (document.all) {
        if (event.keyCode == fmHotkey) {
            window.location = fmDestination;
        } else if (event.keyCode == loginHotkey) {
            window.location = loginDestination;
        }
    }
}

document.onkeypress=backhome;