put div into another

take a look here http://www.gfln.org/default4.aspx ,here is some view state kind of problem in radio button.follow the steps
1 - click on 1 or what ever (from 1 to 7 )
2- click on yes Would attend the conference radio button
3- then agian click on any other daio button say 7 or whatever
4- so div created dynamially on any radio button click are hiding when click on any
5 - i need to main a state of div

if any one need code do let me know