so i am using this plugin  http://jsfiddle.net/maxgalbu/UfyjW/ …(its a modified version of gridster) and i would like to know how i can change it to expand to the right when new items are added...when you add a new item it gets added to the bottom and the rows increase...but the number of columns is fixed..i would like to make it like the windows start screen when you reorder stuff...