Rubberband Zoom in/out

[Ryan Ollerenshaw]

Does anyone have any good code examples of a javascript zoom in/out 
rubber band utility.  I know this has been asked before but i have been 
yet to find a good code examples and i am not familiar enough with 
javascript to write this by myself in the limited amount of time that i 
have.

I have found the rubber band code on the mapserver page at:
http://mapserver.gis.umn.edu/search?SearchableText=rubber+band
but it does not provide a way to return the lat/long bounding box 
created by the rubber band,  which is the part that i need.