tkinter OptionMenu column break

[erikober at gmail.com]

I'm creating a OptionMenu button for a gui and I'm having a problem
where the drop down list is so long that most of the options are off
screen.  The correct behavior would be that another drop down menu list
would be created next to it with the continued options.  Here is the
small code snippet that I have now:

myOptionList = .......
OMcreate = "OptionMenu(frame, myVar, \"%s\",
command=myOMCB)"%(myOptionList)

I was thinking that there must be some variable to do this.  Any help
would be much appreciated.  Thanks!