olivebranchms/obms_r4/nav.php3

<?php
header("Content-type: image/gif");

$width  = 30;
$height = 16;
$font   = 1;
if(!isset($label)) { $label="Click Me!"; }

$image = imagecreate($width,$height);

// set up the image colors
$body   = imagecolorallocate($image, 0xCC, 0xCC, 0xCC);
$shadow = imagecolorallocate($image, 0x99, 0x99, 0x99);
$light  = imagecolorallocate($image, 0xE0, 0xE0, 0xE0);
$text   = imagecolorallocate($image, 0x33, 0x33, 0x33);

// draw button body
imagefilledrectangle($image,
  1,1,
  $width-2,$height-2,
  $body);
// draw bottom shadow
imageline($image,
  0,$height-1,
  $width-1,$height-1,
  $shadow);
// draw right shadow
imageline($image,
  $width-1,1,
  $width-1,$height-1,
  $shadow);
// draw top highlight
imageline($image,
  0, 0,
  $width-1, 0,
  $light);
// draw left highlight
imageline($image,
  0, 0,
  0, $height-2,
  $light);

// calculate label size
$labelheight = imagefontheight($font);
$labelwidth  = imagefontwidth($font) * strlen($label);

// calculate label position
$labelx = ($width - $labelwidth)/2;
$labely = ($height - $labelheight)/2;

// draw label offset
//imagestring($image,$font,$labelx+1,$labely+1,$label,$shadow);

// draw label
imagestring($image,$font,$labelx,$labely,$label,$text);

// output the image
header("Content-type: image/gif");
imagegif($image);

?>