Green slider bar off the side of the details box

What steps will reproduce the problem?
1. take the green slider bar off the left edge of the details window :)
2.
3.

What is the expected output? What do you see instead?
to have the green bar stop at the edge and wait for the mouse to come back

What version of the product are you using? On what operating system?
v0.2

Please provide any additional information below.

jinlu@Piscan ~ $ ntv UMD_Astro/Journal\ Club/medianRM_image.fits 
<matplotlib.colors.Colormap instance at 0x900b78c>
Traceback (most recent call last):
  File
"/usr/lib/python2.6/site-packages/matplotlib/backends/backend_qt4.py", line
135, in mouseReleaseEvent
    FigureCanvasBase.button_release_event( self, x, y, button )
  File "/usr/lib/python2.6/site-packages/matplotlib/backend_bases.py", line
1198, in button_release_event
    self.callbacks.process(s, event)
  File "/usr/lib/python2.6/site-packages/matplotlib/cbook.py", line 155, in
process
    func(*args, **kwargs)
  File "/usr/lib/python2.6/site-packages/NTV/NTV.py", line 186, in
button_release_callback
    self.cutsize = 4*int(self.apsize)
TypeError: int() argument must be a string or a number, not 'NoneType'

Original issue reported on code.google.com by JDFra...@gmail.com on 24 Sep 2009 at 2:00

ViniciusDamiati / ntv

Green slider bar off the side of the details box #2