How do I close the "user information" after user confirm data

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Hello,
I'm implementing the modal popop window using this EXCELENT article:

http://www.codeproject.com/Articles/589445/JavaScript-Modal-Popup-Window

I'm using the "Show URL Window".
All is working as in the example. But I need to close the popup when user confirm data instead of show the "USer Information" popup an the click to OK to go pack to parent window.
I would like to return to parent once user confirm data.
I've tried to put bailwal_modalPopupWindow.HideModalPopUp() here:


function EnrollNowClick() {
PassValueToParentWindow();
bailwal_modalPopupWindow.HideModalPopUp();

//window.parent.modalWin.CallCallingWindowFunction(0, 'User Enrolled Scucessfully');
}

but no way.

Could you tell me please how to do it?
Thanks

What I have tried:

function EnrollNowClick() {
PassValueToParentWindow();
bailwal_modalPopupWindow.HideModalPopUp();

//window.parent.modalWin.CallCallingWindowFunction(0, 'User Enrolled Scucessfully');
}