[Plugin: SimpleModal Login] Can't get it to work

Sorry to be so generic, but I don’t know how to specify what’s going wrong…it just isn’t doing anything.

I uploaded; I activated; i used this code in my theme:

<div id="userMeta">
			<?php if (is_user_logged_in()) { ?> 

			<div class="acct-signedin">
			   <p>Hello <?php global $user_login; get_currentuserinfo(); echo $user_login; ?> |
			   <a href="<?php bloginfo('url'); ?>/wp-admin/profile.php">Edit your profile</a> |
			   <a href="<?php echo wp_logout_url(); ?>">Sign out</a></p>
			</div> 

			<? } else { ?> 

			<div class="acct-signedout">
			   <p><a href="wp-login.php?action=register" class="simplemodal-register">Create an Account</a> |
			   Already a member? <a href="wp-login.php" class="simplemodal-login">Sign in</a></p>
			</div> 

			<? }; ?>

The log in, log out, and register functions already worked just fine, and continue to work; but when you click the “Sign-In” link, it doesn’t load as a modal window…it just takes you to the log-in page.

Obviously, I’ve done something wrong. So what gives?

http://wordpress.org/extend/plugins/simplemodal-login/