New Version 2

<?php
if ( function_exists('register_sidebar') )
register_sidebar( array(
						'name' => 'Left Sidebar Content',
						'before_widget' => '<div class="sidebaritem">',
						'after_widget' => '</div>',
						'before_title' => '<h3 class="sidebar_title">',
						'after_title' => '</h3>',
						));
if ( function_exists('register_sidebar') )
register_sidebar( array(
						'name' => 'Footer Widget Area 1',
						'before_widget' => '<div class="footeritem">',
						'after_widget' => '</div>',
						'before_title' => '<h3 class="footer_title">',
						'after_title' => '</h3>',
						));
if ( function_exists('register_sidebar') )
register_sidebar( array(
						'name' => 'Footer Widget Area 2',
						'before_widget' => '<div class="footeritem">',
						'after_widget' => '</div>',
						'before_title' => '<h3 class="footer_title">',
						'after_title' => '</h3>',
						));
function register_my_menus() {
	register_nav_menus(
					   array( 'header-menu' => __( 'Top Nav' ), 'side-menu' => __( 'Side Nav' ), 'footer-menu' => __( 'Footer Nav' ))
					   );
}
add_action( 'init', 'register_my_menus' );