jQuery Grid Plugin - jqGrid

Currently this is doable with some restrictions, for one you have to have a caption and you have to display the show/hide button.  for me these restrictions are not usable as I don't want to display a caption or the button.

The ideal way to do this would be to allow a blank URL so the grid shows with no data, then when you need to load data, for instance on a tab click you could check if the URL is blank, then do something like this:

$("#togrid").setGridParam({url:'/user/get_data?nd='+new Date().getTime()+'&dir=TO&coid=${c.coid}'}).trigger("reloadGrid");

I can sort of do this now, but when given a blank URL the grid tries to generate one from the last GET query and this is not idea as it still tries to grab data.

Would it be possible to do this?  i.e. allow the grid to have a blank URL and if it is blank don't try to load data?