Resize a image (Thumbnail Creation)

I am finishing working on one of my projects * SGML2IMAGE *. It's a webpage capture as image program written in pure PHP. I have everything done and working great but the * Thumbnail Creation *. Handling the capture at 800 X 600 or 1024 X 768 works great but trying to create a NICE looking thumbnail has me wondering why all the different scripts I have tried don't work very well! So my question does anyone know of a good * Thumbnail Creation * function using the core PHP GD library that makes nice thumbnails.

Thank You

ms!

I am currently doing this! It does work, but the * thumbnail * images don't look the best....

thumbnail

http://24.218.192.217/capture/b8175eb0d6870736462d1fe7e41ecfae_t.png

main capture

http://24.218.192.217/capture/b8175eb0d6870736462d1fe7e41ecfae.png



      function make_small ( $width, $height, $percent, $path, $name, $ext )
      {
            $h = round ( $height * $percent );
            $w = round ( $width * $percent );

            if ( $width > $height && $h < $height )
            {
                         $h = ( $height / ( $width / $w ) );

            }
            else if ( $width < $height && $h < $width )
            {
                  $w = ( $width / ( $height / $h ) );
            }
            else
            {
                  $w = $width;
                  $h = $height;
            }

            $img = imagecreatetruecolor ( $w, $h );
            $old = imagecreatefrompng ( $path . $name . $ext );
            imagecopyresized ( $img, $old, 0, 0, 0, 0, $w, $h, $width, $height );
            imagepng ( $img, $path . $name . '_t' . $ext );
            imagedestroy ( $img );
             imagedestroy ( $old );

            if ( file_exists ( $path . $name . '_t' . $ext ) )
            {
                  return ( true );
            }

            return ( false );
      }