Postback problem

I have a problem with postbacks and master pages.

I have a website project I’ve quickly put together to test this in Visual Studio 2005 (asp.net & c#).* On the master page, there are two ContentPlaceholders.

In one of the web pages called search.aspx (which uses the master page), I have a ASP.Net WebControl Button in the second ContentPlaceHolder that I simply want to use to generate a postback.

However, when I try the button in the browser, nothing happens!* There is just no postback!

I am using Internet Explorer 7; it seems to work okay in Firefox.* But it needs to work in IE7 for what I am doing.

Can anyone help with this, as it’s critical to the actual project?

Thanks in advance.