allow enter key to act like view report button

Hi All,
I developed a report in VS2008, and deployed it on report server. I'm calling this report by going to the following URL:

http://ssrstest/ReportServer/Pages/ReportViewer.aspx?%2fSalesInvoices

Once the intial page is rendered, i enter parameters and click the View Report button. But my customer wants to be able to press Enter instead of clicking the button. I've read related conversations on this and other forums, but probably I'm missing something. My question is: Can I achieve my goal by making changes in the report itself, and/or the URL, because those are the only objects available to me.

Thanks,

Viktor