public void SetBackgroundResolution(Camera mainCamera, GUITexture myGUITexture)
{
Rect temp = myGUITexture.pixelInset;
temp.height = mainCamera.GetScreenHeight();
temp.width = mainCamera.GetScreenWidth();
temp.y = -(mainCamera.GetScreenHeight()/2);
temp.x = -(mainCamera.GetScreenWidth()/2);
myGUITexture.pixelInset = temp;
}