--- /home/cweiske/Dev/cvs/pear/instpear/share/pear/phd/themes/pear/pearchm.php.orig	2008-10-03 09:15:42.000000000 +0200
+++ /home/cweiske/Dev/cvs/pear/instpear/share/pear/phd/themes/pear/pearchm.php	2008-10-03 09:15:45.000000000 +0200
@@ -195,8 +195,11 @@
 		$this->hhcStream = fopen($this->chmdir . "pear_manual_{$lang}.hhc", "w");
 		$this->hhkStream = fopen($this->chmdir . "pear_manual_{$lang}.hhk", "w");
 		
-		foreach(array("reset-fonts", "style", "manual") as $name)
+		foreach(array("reset-fonts", "style", "manual") as $name) {
+		    if (!file_exists($this->outputdir . "$name.css")) {
 			file_put_contents($this->outputdir . "$name.css", $this->fetchStylesheet($name));
+                    }
+                }
 		
 		self::headerChm();
     }