Combo is diplaying behind my content on grid

I have a combo setup on a grid column and when i click to choose an item the window and shadow are showing at to low of a z-index.

Is there a way I can set the starting z-index to a higher value to work with my other framework items?

In case anyone else runs across this. I fixed my problem by overloading my css with the following.

.dhx_combo_select {
z-index: 60000;