GD lib. image quality!

Hello! I wrote a little script for generation thumbnails of larger images.... <code> $origImage = imageCreateFromJpeg($sourcePath."/".$currentImageName); $thumbnail = imageCreate($thumbWidth,$thumbHeight);// create empty image imageCopyResized($thumbnail,$origImage,0,0,0,0,$thumbWidth,$thumbHeight,imag esX($origImage),imagesY($origImage)); imageJpeg($thumbnail, $targetPath."/".$thumbNamePrefix."_thumb.jpg"); // Store it imageDestroy($thumbnail); // cleanup echo "<br>Image ".$targetPath."/".$thumbNamePrefix."_thumb.jpg"." created successfully!"; </code> then, I've noticed that the quality of the thumbnails created is very bad! my "phpinfo()" page shows "2.0 or higher" as GD version So, I'm wondering whether I'm doing something wrong in my code or whether there exist a better library to use with PHP ... a library able to generate good quality JPG files... Thanks in advance. Arcadius.