<?php
if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
    <div class="blog-post">
        <ul id="projects">
            <li>
                <div class="blog-post-title">
                    <a class="project" rel="<?php the_permalink();?>" href="<?php the_permalink();?>">
                    <?php the_title(); ?></a>
                </div>
                <span class="blog-post-meta"><?php echo get_the_date(); ?> by <a href="#"><?php the_author(); ?></a></span>
            </li>
        </ul>
    </div>
<?php endwhile; endif; ?>

</div>
<div id="project-single">
    <div id="inner-single"></div>
</div>

jQuery(document).ready(function ($) {
$.ajaxSetup({cache: false});
    $("a.project").click(function () {
        var post_link = $(this).attr("href");
        alert(post_id);
        $("#inner-single").html('<div class="loading">loading...</div>');
        $("#inner-single").load(post_link);
        return false;
    });
});

<?php $post = get_post($_POST['id']); ?>
    <div id="single-post post-<?php the_ID(); ?>">
        <?php while (have_posts()) : the_post(); ?>
    <?php the_content();?>
</div>
<?php endwhile;?>
<?php get_footer(); ?>

function ajax_enable () {
    wp_enqueue_script( 'admin_url', includes_url() . 'js/myajax.js', array( 'jquery' ) );
    $admin_url = array( 'ajaxUrl' => admin_url( 'admin-ajax.php' ) );
    wp_localize_script( 'admin_url', 'AdminURL', $admin_url  );
}
add_action( 'wp_enqueue_scripts', 'ajax_enable' );