opendir folder path issue

I can’t seem to get WP to recognize correct image folder path. Anybody see anything wrong with this??

<?php

    global $post;
    $post_slug=$post->post_name;

	$img_directory = bloginfo("template_directory");
	$img_directory .= '/images/'.$post_slug;
	echo $img_directory;
	// Styling for images
	echo '<div id="myslides">';
	if ($handle = @opendir($img_directory) or die("There is an error with your image directory!")) {
		while (false !== ($file = readdir($handle))) {
    		if (strpos($file, ".jpg")) {
				$path = $img_directory . '/' . $file;
				echo '<img src="' . $path . '"/>';
    		}
		}
		closedir($handle);
	}
	echo '</div>';
?>