adjust static position with rect like vectors

i have a scroll view with this code:

 scrollPosition = GUI.BeginScrollView(new Rect(110,50,130,150),scrollPosition, new Rect(110,50,130,560),GUIStyle.none,GUIStyle.none);

but the position of scroll view change with my camera.i want to adjust the position like vector to doesn't change with the position of my camera...