Strange calculations in getGrid

[theold190]

Experiencing the same issue as described in "Gravatar images full screen of the browser window #7". Found out that getGrid function is working a bit strange. Here are my notes:

1. The recursive calls to getGrid are passing options structure instead of columnWidth.
2. getGrid is always using $(window).width() to initialize options.width, so there is no much point in the recursive calls.