I was using window.showModalDialog() but doesn't work on all browsers.
People recommends me jquery, thickbox and also this contact Example
but the problem is when i submit the page, server will send me another page, and that page will replace my original page!
so actually it doesn't fulfill my requirement. My requirement is on button click modal page should open and it can redirect to other page on same window without disturbing my original page and when I close My original page get reflections. So is it possible?