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Javascript test if child page is open will not work

Charlietn asked
Last Modified: 2012-05-12
I have been having this problem for a while and thought it was solved.  I am opening a child window that allows users to edit records.  When that window closes I need to run a function.  
This is the code I am spawning the child window with.  It fires the alert as soon as I click.  I thought it would alert when I close the child.
var child_win;
function cliedit()
var cs=document.getElementById("conno").value;
if (cs=="")
  alert("No Client Selected");
 var cs=document.getElementById("conno").value;
 var urlstring="?cSearch="+cs;
 child_win=window.open("https://www.myvcaccount.com/cgi-bin/upclient.exe"+urlstring , "Client Data", "toolbar=no,menubar=no,width=800,height=425,resizable=no");
   if (child_win && child_win.closed);
    alert("window is closed")

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