public static void slideBottomTop(float transTime, ref GUIArea exit, ref GUIArea enter)
 {
     exit.exitBottom(transTime);
     enter.enterTop(transTime);
 }
 public static void slideDownOutIn(float transTime, ref GUIArea exit, ref GUIArea enter)
 {
     exit.exitBottom(transTime);
     enter.enterBottom(transTime);
 }