modal pop up on clicking the drop down

[laks2886]

Hi..

I have a page where i have some drop downs whose defalut value is set to "All". unlike the other cases where, when we click on the drop down arrow we get a list items to select. Clicking on the items and getting a pop up is easier.

But Now my requirement is on click of this drop down arrow a pop up extender(Ajax) has to be opened. There should not be any list items below as in the normal case.

please see the image in the attachment. If i click on the drop down arrow of Geography filter, the pop up shown next to that has to be opened where i can select multiple values.

Please let me know how this can be done.

Thanks in Advance

[ChipR]

Don't see any attachment, but I'll take a guess.
It sounds like you don't want a combo box at all, but a plain text box with a
button next to it, which has an icon or text that looks like a down arrow. The button's click event can make a list box visible, open another form for you, or show a custom menu.