If you have a 3-button mouse, you can use that third button in NetPositive as the equivalent to right-clicking and choosing „New window with this link“ or „New window with this image.“ This saves you the trouble of navigating the context menu that appears when right-clicking a link or image.
If you don’t have a 3-button mouse, you can simulate the third button by pressing Ctrl+Win while left-clicking, which is by the way a system-wide key combination.