Show progress bar in the grid

I need to show progress bar when I am searching for the data in synchronous mode.

I am using following to show progress bar in the grid but the progress bar would not come up
obj.setStatusProperty("code","loading");
obj.refresh();

var req = new Active.HTTP.Request;
req.setProperty("async", false); ...
...
...

Thanks

I want to show a progress bar whilst the program is waiting for the query results

You are going to find that in IE, the instant it goes off to get data from a server it halts all page processing until it gets the result from the server. It even halts annimated GIF images! I found there is NO easy way to have a progress bar on a page while it is getting info from a server. I think I found that Flash annimation still works but for me that was not an option.