function image_podpod($im, $coul='000000', $deb=0, $fin=70)
{
	include_ecrire("filtres");
	$image = valeurs_image_trans($im, "podpod-$coul-$deb-$fin","png");
	if (!$image) return("");

	$couleurs = couleur_hex_to_dec($coul);
	$dr= $couleurs["red"];
	$dv= $couleurs["green"];
	$db= $couleurs["blue"];
	
	$x_i = $image["largeur"];
	$y_i = $image["hauteur"];
	
	$im = $image["fichier"];
	$dest = $image["fichier_dest"];
	
	$creer = $image["creer"];
	
	if ($creer) {
		$im = $image["fonction_imagecreatefrom"]($im);

		$im_ = imagecreatetruecolor($x_i, $y_i);
		@imagealphablending($im_, false);
		@imagesavealpha($im_,true);
		$color_t = ImageColorAllocateAlpha( $im_, 255, 255, 255 , 127 );
		imagefill ($im_, 0, 0, $color_t);

		for ($x = 0; $x < $x_i; $x++) {
			for ($y=0; $y < $y_i; $y++) {
			
				$rgb = ImageColorAt($im, $x, $y);
				$a = ($rgb >> 24) & 0xFF;
				$r = ($rgb >> 16) & 0xFF;
				$g = ($rgb >> 8) & 0xFF;
				$b = $rgb & 0xFF;
				
				$g = round(($r+$g+$b) / 3);
				
				if ($g >= $deb AND $g <= $fin) $color = ImageColorAllocateAlpha( $im_, $dr, $dv, $db , $a );
				else $color = ImageColorAllocateAlpha( $im_, 0, 0, 0 , 127 );
				
				imagesetpixel ($im_, $x, $y, $color);	
			}
		}		
		$image["fonction_image"]($im_, "$dest");	
	}

	$class = $image["class"];
	if (strlen($class) > 1) $tags=" class='$class'";
	$tags = "$tags alt='".$image["alt"]."'";
	$style = $image["style"];
	
	return "<img src='$dest'$tags />";
}