function couleur($letexte) {
	$letexte = preg_replace('`<cs_(.*)>(.*)</cs_\1>`iU', '<span class="cs_$1">$2</span>', $letexte);
	$letexte = preg_replace('`\[((.*) ?(.*))\](.*)\[/\1\]`iU', '<span class="cs_$1">$4</span>', $letexte);
	$letexte = preg_replace('`<span class="cs_([0-9a-zA-Z_]*) +([0-9a-zA-Z_]*)">`iU', '<span class="cs_$1_$2">', $letexte);
	return $letexte;
}