jQuery Grid Plugin - jqGrid

Hi I've been trying to figure out if its even possible to take a jqGrid with 3 subgrids and align them so they are horizontally aligned. Like this:

================================================== 
|____ | |_____| |__________|

I've tried setting each one to float left/right ect… but the style gets overwritten even when set to important. Any help would be greatly appreciated. If this isnt possible, is there a decent way to display multiple arrays of different sizes easily, instead of just letting them be bunched into a single cell?