Code in Parent Page
  1. <script type="text/javascript">
  2. function openChildWindow() {
  3. window.open('UrlToOpen', 'mywindow1234567890');
  4. window.CallParentfunction= function () {
  5. //Your Code Functionality
  6. }
  7. }
  8. </script>
  10. <a onclick="openChildWindow(); return false;">Open Child Window</a>
Code in Child Page
Calling Function of Parent Window in Child Window:
  1. <script type="text/javascript">
  2. window.onunload = function (e) {
  3. opener.CallParentfunction();
  4. };
  5. </script>
Note:This doesn't work on IE if the the Child window and the Parent window are not from the same domain.