Dynamic Menu Creation

add_action('init', 'theme_register_menu');
function theme_register_menu() {
	if (function_exists('register_nav_menu')) {
		register_nav_menu( 'theme-main-menu', __( 'Main Menu', 'brightpage' ) );
	}
}
function theme_default_menu() {
	echo '<ul id="dropmenu">';
	if ('page' != get_option('show_on_front')) {
		echo '<li><a href="'. site_url() . '/">Home</a></li>';
	}
	wp_list_pages('title_li=');
	echo '</ul>';
}

===> paste to the ul for daynamic menu

<?php wp_nav_menu( array( 'theme_location' => 'main-menu') ); ?>

====> paste mainmenu div
<?php
	if (function_exists('wp_nav_menu')) {
		wp_nav_menu(array(
    'theme_location' => 'theme-main-menu', 
    'menu_class'        => 'nav',
    'fallback_cb'    => 'theme_default_menu'));
	}
	else {
		wpj_default_menu();
	}
?>