for ($j = 0; $j < $y_i; $j++) {
	$resultat = min($larg[$j-1],$larg[$j],$larg[$j+1]);
	$forme .= "\n<div style='float: $align; clear: $align; width: ".($margin+round(($w - ($resultat)*$rapport)))."px ; height: ".round($hauteur)."px; overflow: hidden;'></div>";
}