Closing a pop-up

Question

Requirement: back ground information: 1. There is a Search Button on the Page “page1.aspx”. On Click event of this Button, it launches an electronic items Search Popup window(items.aspx). 2. Electronic items Search Popup has a Button “Go”. On click of this Button , The Searched electronic items are displayed in a Datagrid from the database depending on the Search String entered by the user. Each row in the Datagrid is a hyperlink. 3. On Click of individual link(row) of Datagrid, the Text of the link should be Navigated back to the “page1.aspx” in a Textbox and the Popup Window of Occupation Search should be closed. This textbox should be disabled. I need help in closing the pop-up on selection of an item. Thanks - techiDam