ASP.Net Dynamic user controls problem?

I have a datalist on a usercontrol. In that datalist there is 4 linkbuttons. On linkbutton1 click a modalpopup will open (using modalpopup extender). In that modalpopup there is a panel and inside the panel there is a placeholder. In that placeholder on the linkbutton1 click i load another usercontrol. On that usercontrol there is a textbox and a linkbutton2. Everything is working fine till here but if a tried to eneter some text in textbox and click on linkbutton2 the modalpopup vanishes without firing the linkbutton click event? What is the problem and how can i solve this problem??ASP.Net Dynamic user controls problem?
ah i dont know what your talking about if you simpled up the question you migh get more answers