//définition des lignes noires

$nb_lignes = mt_rand(3,7);

{

	ImageLine($image, mt_rand(0,40), mt_rand(0,100), mt_rand(280, 320), mt_rand(0,100), $noir);

//définition des lignes colorées.

$nb_lignes = mt_rand(3,7);

{

	ImageLine($image, mt_rand(0,40), mt_rand(0,100), mt_rand(280,320), mt_rand(0,100), $colors[mt_rand(0,$Tcolors-1)]);

//définition des ellipses

$nb_ellipses = mt_rand(1,6);

	$_SESSION['captcha'] .= $lettre; //stockage

	$taille = mt_rand(35,45); //taille

	$angle = mt_rand(-35,35); //angle

	$y = mt_rand(55, 60); //ordonnée

	$police = $polices[mt_rand(0, $Tpolices-1)]; //police :p

		{

			$k = $questions[mt_rand(0,$Tquestions-1)];

			{

				$k = $questions[mt_rand(0,$Tquestions-1)];