How to add a paypal donate button?

I was trying to add a paypal donate button to our forum but it doesn't work. Is there any way I could add this to our main page? Here is the code provided by Paypal.

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Want to further support our work? Click the donate button below to contribute whatever amount you like. Thanks for your support!
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<br><form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="92S6NWNKKWMB6">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_donate_SM.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>