regext = (reg==1) ? "_reg" : "";

gigabit_0 = new Image();
gigabit_0.src = "assets/btn_tech_gigabit"+regext+"_0.gif";
gigabit_1 = new Image();
gigabit_1.src = "assets/btn_tech_gigabit"+regext+"_1.gif";
gigabit_2 = new Image();
gigabit_2.src = "assets/btn_tech_gigabit"+regext+"_2.gif";
wireless_0 = new Image();
wireless_0.src = "assets/btn_tech_wireless"+regext+"_0.gif";
wireless_1 = new Image();
wireless_1.src = "assets/btn_tech_wireless"+regext+"_1.gif";
wireless_2 = new Image();
wireless_2.src = "assets/btn_tech_wireless"+regext+"_2.gif";
voip_0 = new Image();
voip_0.src = "assets/btn_tech_voip"+regext+"_0.gif";
voip_1 = new Image();
voip_1.src = "assets/btn_tech_voip"+regext+"_1.gif";
voip_2 = new Image();
voip_2.src = "assets/btn_tech_voip"+regext+"_2.gif";

function SwapOut() {
  SwapImage('gigabit','gigabit_0');
  SwapImage('wireless','wireless_0');
  SwapImage('voip','voip_0');
}