Actually they didnt.
In fact, contrary to myth, few if any did.
http://en.wikipedia.org/wiki/Reactions_to_the_September_11_attacks#Islamic_world
Wikipedia!!?? Oh that is rich. A real trustworthy site there! So, “few if any” you say? If any??!!....If ANY!!?? Just great, another fan of the head chopping muslims weighs in pushing the islamic death cult’s goat humper’s version of what happened. This old boy ain’t buyin’ it for one minute and never will.