finding if a particular popup is open

Try
 win1=window.open('opener1.html','window1','width=300,height=300')
 
 if (win1.closed)  
 
 The closed property is a boolean value that specifies whether a window has been closed. When a window closes, the window object that represents it continues to exist, and its closed property is set to true.

Use closed to determine whether a window that you opened, and to which you still hold a reference (from the return value of window.open), is still open. Once a window is closed, you should not attempt to manipulate it.

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Moondancer
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thanks, and sorry for the delay! :)

Thanks for responding and finalizing this; the points appear to have been at zero, so I corrected this to 50, the minimum for easy questions.

Moondancer - EE Moderator