I have corrected some of the errors in different chat methods, and added some new features. all three methods now work synchronously. you can download the updated module from:
http://www.ceng.metu.edu.tr/~ahmet/Wiki/software/moodle_chat_revamped/moodle_chat_revamped
here is a summary of the new features:
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chatinput: added multiline text (use Shift+Enter to send), html, and drawing input features.
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chatd: works synchronously with other methods.
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chatd: support for multiple sites.
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fixed the jsupdated bug. now the messages is updated as soon as user sends a message.
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Users can select the chat method and refresh rate.
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users can select to show/hide pictures and enter/exit messages in chat session or in old chat reports.
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fixed grouping bugs in chat reports.