Grid columns expand/collapse

[Ronits]

Hi,
Would like to implement a grid, which expands/collapses horizontally i.e. if there are 20 columns, in first look, grid will display 10 columns, upon clicking on expand button, the next 10 rows needs to be displayed.
Please see the image for referral :
Screen Shot 2013-01-28 at 6.23.44 PM.png

Any other suggestion on implementation would be nice, like scrolling and dynamic loading.
Please help.

[mitchellsimoens]

Not going to be the best but you could add a docked item to the grid and hide the column when it is "collapsed"