ASP.NET , AJAX and Multiple popups

Question

I am faced with a Situaton, Here is the scenario.
I am using ASp.NET and AJAX
 On a page I have 3 sections section1 , scetion 2 , section 3 which have some links in each of them.
Each section is a usercontrol and  is in a updatepanel on tha main page.

 When I click on a link in section1 I should open a popup , when I click on a link in section 2 and sctions 3 also I should be able to open popups . Now I have 3 popups I should be able to switch back and forth from popups to the main section , able to click on other links and that should update the
data on the popups based on the link clicked. The popups should not get minimized when I switch back and forth. I should be able to drag the popups around.
What is the best way to implement this ?
I tried using ModalPopupextender and was able to open different popups when I clicked on the
links of the section , but having some trouble , when I have single modalpopup I can drag that around
but When I have 2 modalpopus opened , I can drag and move the popup which is opened last but cannot drag the popup which is opened first .
Please let me know if there is any other way of dealing with this ? any suggestion and direction
is appreciated.
Thanks,