dhtmlxGrid combo z-index

I have dhtmlxtabbar that shows in the pop up. In the dhtmlxtabbar I have a grid and I use combo for one column.

On add row I’ve created combo with predefined values.

The problem is when I click on the combo it won’t show up the list.you can edit and change it with arrows,(the data exist),but list it shows up behind the pop-up,probably because the popup have bigger z-index then combo.

So my question is,Can I somehow change it(increase the z-index of a combo).Is it possible?

Are you using “combo” eXcell type? In such case you can add z-index to the following classes:

.dhx_combo_box{
z-index: 9999;
}
.dhx_combo_list {
z-index:9999;
}

Thanks for the very fast response.

I change
.dhx_combo_select{
     z-index:9999;
}
and it works.