Different sidebar to pages

I want to assosiate different sidebars to different (types) of pages.

I tried to change the “get sidebar” in my page php with:

<?php

if    (is_page('1')) {

     echo '<?php include(TEMPLATEPATH."/sidebar1.php");?>';

} elseif (is_page('76')) {

     echo '<?php include(TEMPLATEPATH."/sidebar2.php");?>';

} elseif (is_page('3')) {

     echo '<?php include(TEMPLATEPATH."/sidebar3.php");?>';

} elseif (is_page('4')) {

     echo '<?php include(TEMPLATEPATH."/sidebar4.php");?>';

} elseif (is_page('5')) {

     echo '<?php include(TEMPLATEPATH."/sidebar5.php");?>';

} elseif (is_page('6')) {

     echo '<?php include(TEMPLATEPATH."/sidebar6.php");?>';

} else {

     echo '<?php include(TEMPLATEPATH."/sidebar.php");?>';

}

?>

(is_page and number is the ID of each page). It seems as the sidebars is there, but they are not visible. Is this code and thinking correct?