Hello Sir,<br>   Firstly, be sure you are using the url package or equivalent. Secondly, be sure to escape all special characters: % in this case, which is LaTeX&#39;s comment character. Try this:<br><br>This is a test.\footnote{\url{<a href="http://www.teledyne-si.com/infrared_visible_fpas/Teledyne">http://www.teledyne-si.com/infrared_visible_fpas/Teledyne</a>\%20Imaging\%20Sensor\%20-\%20Infrared\%20SPIE\%20Paper\%20_7021-20_.pdf}}<br>
<br>where you will note I preceded each % with a backslash.<br><br>Happy TeXing!<br>-Bob Wilson<br><br><div class="gmail_quote">On Fri, Apr 3, 2009 at 10:18 AM, Mohamed HOUSSNI <span dir="ltr">&lt;<a href="mailto:mohamed.houssni@e-press.co.ma">mohamed.houssni@e-press.co.ma</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Boris Veytsman a écrit :<br>
<div class="im"><br>
&gt;MH&gt; Date: Fri, 03 Apr 2009 15:46:44 +0000<br>
&gt;MH&gt; From: Mohamed HOUSSNI &lt;<a href="mailto:mohamed.houssni@e-press.co.ma">mohamed.houssni@e-press.co.ma</a>&gt;<br>
&gt;<br>
&gt;MH&gt; Dear list,<br>
&gt;<br>
&gt;MH&gt; Please can you help to solve a problem with an \url inserting in a<br>
&gt;MH&gt; footnte command which contains some special characters. For example :<br>
&gt;<br>
&gt;MH&gt; \footnote{\url{<a href="http://www.teledyne-si.com/infrared_visible_fpas/Teledyne%20Imaging%20Sensor%20-%20Infrared%20SPIE%20Paper%20_7021-20_.pdf" target="_blank">http://www.teledyne-si.com/infrared_visible_fpas/Teledyne%20Imaging%20Sensor%20-%20Infrared%20SPIE%20Paper%20_7021-20_.pdf</a>}}<br>

&gt;<br>
&gt;\urldef\fancy\url{<a href="http://www.teledyne-si.com/infrared_visible_fpas/Teledyne%20Imaging%20Sensor%20-%20Infrared%20SPIE%20Paper%20_7021-20_.pdf" target="_blank">http://www.teledyne-si.com/infrared_visible_fpas/Teledyne%20Imaging%20Sensor%20-%20Infrared%20SPIE%20Paper%20_7021-20_.pdf</a>}<br>

&gt;<br>
&gt;<br>
&gt;aaa\footnote{\fancy}<br>
&gt;<br>
&gt;<br>
&gt;<br>
</div>Thanks for your response.<br>
<br>
I try this but it does not compile. It gives me the following error<br>
<br>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
<br>
! Extra }, or forgotten \endgroup.<br>
\sbox ...hbox {\color@setgroup #2\color@endgroup }<br>
<br>
l.181 ...0Infrared%20SPIE%20Paper%20_7021-20_.pdf}<br>
<br>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
<br>
Thanks a lot<br>
<br>
--<br>
-------------------<br>
Dr. Mohamed Houssni<br>
Responsable d&#39;Edition<br>
e-Press,<br>
34, Rue Mustapha El Manfalouti<br>
Quartier Gauthier<br>
Casablanca - Maroc<br>
Phone : 212 (0)22 26 23 21<br>
Fax   : 212 (0)22 26 80 84<br>
<div><div></div><div class="h5"><br>
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