function slides() {
register_post_type( 'slides',
array(
'labels' => array(
'name' => __( 'Slides' ),
'singular_name' => __( 'Slide' )
),
'public' => false,
'show_ui' => true,
'_builtin' => false, // It's a custom post type, not built in
'_edit_link' => 'post.php?post=%d',
'capability_type' => 'post',
'hierarchical' => false,
'has_archive' => false,
'query_var' => "portfolio",
'menu_position' => 20,
'supports' => array('title', 'excerpt', 'editor', 'thumbnail',),
'supports' => array( 'title', 'editor', 'excerpt', 'author', 'thumbnail', 'trackbacks', 'custom-fields', 'comments', 'revisions', 'page-attributes' ),
'taxonomies' => array( 'category', 'post_tag', 'page-category' ),

)
);
}
add_action( 'init', 'slides' );





function load_scripts() {

// jquery cycle

wp_register_script( 'jquery.cycle', get_template_directory_uri() . '/js/jquery.cycle.all.js', array('jquery'));

wp_enqueue_script( 'jquery.cycle' );

// jquery code for site

wp_register_script( 'site', get_template_directory_uri() . '/js/site.js');

wp_enqueue_script( 'site' );

}

add_action('wp_enqueue_scripts', 'load_scripts');

<?php
$q = new WP_Query('post_type=slides');
if( $q->have_posts() ) :
echo '<div id="slideshow">';
while( $q->have_posts() ) : $q->the_post();
?>
<div class="slide">
<div class="desc"><?php the_content(); ?><div class="slbaslik"><?php echo get_post_meta($post->ID, "slbaslik", true); ?> </div><div class="slfiyat"><?php echo get_post_meta($post->ID, "fiyat", true); ?> </div><center><div class="kgit"><?php echo get_post_meta($post->ID, "kgit", true); ?> </div></center></div>
</div>
<?php
endwhile;
echo '</div>';
endif;
?>