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Can not use top part of page only 3/4 of page works on firefox all of the web page works on Explorer

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pointer will not access top part of page on firefox but works on explorer

pointer will not access top part of page on firefox but works on explorer

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The Yahoo! Toolbar extension and the Babylon extension have been reported to cause this issue. Disable or uninstall those add-ons.

   * https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes