TIWCGJQGridOptions.SetGridHeight(Integer) Method
jqGrid object Sets the new height of the grid dynamically. Note that the height is set only to the grid cells and not to the grid. new_height can be in pixels, percentage, or 'auto'.
jqGrid object Sets the new height of the grid dynamically. Note that the height is set only to the grid cells and not to the grid. new_height can be in pixels, percentage, or 'auto'.