Any way to hide a control until a page postback?

Hey yall,

I've got an Ajax Accordian control. Is there any way I can hide the control until a page postback?

For example,

My page is intentionally left blank until data is summoned for several GridViews via a text box control.

I have one of the GridView, which contains a long list of data, that I have wrapped in an Accordion control. Of course, the GridView stays hidden until the data is summoned but the accordion is static. I would like to hide the accordion as well until the data for the GridView is summoned.

Thanks,

-Cody