function intercity(self, out) {
    if (out) {
        self.src = "Content/Images/intercity.png";
    } else {
    self.src = "Content/Images/intercity_.png";
    }
}

function charter(self, out) {
    if (out) {
        self.src = "Content/Images/charter.png";
    } else {
    self.src = "Content/Images/charter_.png";
    }
}

function routes(self, out) {
    if (out) {
        self.src = "Content/Images/routes.png";
    } else {
    self.src = "Content/Images/routes_.png";
    }
}

function specials(self, out) {
    if (out) {
        self.src = "Content/Images/specials.png";
    } else {
    self.src = "Content/Images/specials_.png";
    }
}

function travel(self, out) {
    if (out) {
        self.src = "Content/Images/travel.png";
    } else {
    self.src = "Content/Images/travel_.png";
    }
}

function about(self, out) {
    if (out) {
        self.src = "Content/Images/about.png";
    } else {
    self.src = "Content/Images/about_.png";
    }
}

function customer(self, out) {
    if (out) {
        self.src = "Content/Images/customer.png";
    } else {
    self.src = "Content/Images/customer_.png";
    }
}

function contact(self, out) {
    if (out) {
        self.src = "Content/Images/contact.png";
    } else {
    self.src = "Content/Images/contact_.png";
    }
}