how do i cycle back and forth through cameras in game.

Hi all,

I am currently using a script to cycle through my cameras in game so that when i hit the "x" key for instance it will deactivate the current camera and activate the next one in a list. The functionality i want to add to this is that I'd like to be able to go back through the cameras as well as forward. So for example the "x" key might cycle through from camera 1-5, but pressing "z" will allow you to cycle back through from camera 5-1. This is the code i am currently using:

 var selectedCamera : int = 0;
     function Start () 
     {
         SelectCamera (0);
     }
  
     function Update () 
     {
         if (Input.GetKeyDown("x")) 
         {
             selectedCamera++;
             if(selectedCamera == transform.childCount){
             selectedCamera = 0;
             }
             SelectCamera (selectedCamera);
  
         }
      }
  
     function SelectCamera (index : int) 
     {
         for (var i=0;i<transform.childCount;i++)    
         {
             if (i == index){
                 transform.GetChild(i).gameObject.SetActiveRecursively(true);
             }
             else{
                 transform.GetChild(i).gameObject.SetActiveRecursively(false);
             }
         }
     }

Any help greatly appreciated.