Java Script Problem

[MILAU]

Hallo Leute wer kann helfen,habe unten aufgelistetes Java Script in meine Seite eingebunden. wenn ich nun die Untermenus offen habe und den Link aktiviert habe möchte ich gerne das sich die Untermenus wieder schließen, wie geht das? Kenne mich leider noch nicht so gut aus mit Java Script, wer kann wir ein Beispiel bezogen auf das Listing unten geben..?

Listing:
<script language="JavaScript">

// Ziel-Frame fuer den Inhalt

var TargetFrame = "CONTENT";


// Aufbau der Menu-Struktur

var countSuperItems = 4;
var countSubItems = new Array (countSuperItems);
var maxSubItems = 10;

var SuperItemN = new Array (countSuperItems);
var SuperItemA = new Array (countSuperItems);
var SubItemN = new Array (countSuperItems);
var SubItemA = new Array (countSuperItems);
var SubHLink = new Array (countSuperItems);


// Super-Menu Struktur

SuperItemN [0] = "images/home.gif";
SuperItemN [1] = "images/aboutus.gif";
SuperItemN [2] = "images/knowhow.gif";
SuperItemN [3] = "images/contactus.gif";

SuperItemA [0] = "images/home_a.gif";
SuperItemA [1] = "images/aboutus_a.gif";
SuperItemA [2] = "images/knowhow_a.gif";
SuperItemA [3] = "images/contactus_a.gif";


// Sub-Menu Struktur

countSubItems [0] = 2;

SubItemN [0] = new Array (countSubItems [0]);
SubItemN [0][0] = "images/home_home.gif";
SubItemN [0][1] = "images/home_credits.gif";

SubItemA [0] = new Array (countSubItems [0]);
SubItemA [0][0] = "images/home_home_a.gif";
SubItemA [0][1] = "images/home_credits_a.gif";

SubHLink [0] = new Array (countSubItems [0]);
SubHLink [0][0] = "content/home.html";
SubHLink [0][1] = "content/credits.html";


countSubItems [1] = 2;

SubItemN [1] = new Array (countSubItems [1]);
SubItemN [1][0] = "images/aboutus_branches.gif";
SubItemN [1][1] = "images/aboutus_location.gif";

SubItemA [1] = new Array (countSubItems [1]);
SubItemA [1][0] = "images/aboutus_branches_a.gif";
SubItemA [1][1] = "images/aboutus_location_a.gif";

SubHLink [1] = new Array (countSubItems [1]);
SubHLink [1][0] = "content/branches.html";
SubHLink [1][1] = "content/location.html";


countSubItems [2] = 3;

SubItemN [2] = new Array (countSubItems [2]);
SubItemN [2][0] = "images/knowhow_design.gif";
SubItemN [2][1] = "images/knowhow_hosting.gif";
SubItemN [2][2] = "images/knowhow_consulting.gif";

SubItemA [2] = new Array (countSubItems [2]);
SubItemA [2][0] = "images/knowhow_design_a.gif";
SubItemA [2][1] = "images/knowhow_hosting_a.gif";
SubItemA [2][2] = "images/knowhow_consulting_a.gif";

SubHLink [2] = new Array (countSubItems [2]);
SubHLink [2][0] = "content/design.html";
SubHLink [2][1] = "content/hosting.html";
SubHLink [2][2] = "content/consulting.html";


countSubItems [3] = 2;

SubItemN [3] = new Array (countSubItems [3]);
SubItemN [3][0] = "images/contactus_feedback.gif";
SubItemN [3][1] = "images/contactus_address.gif";

SubItemA [3] = new Array (countSubItems [3]);
SubItemA [3][0] = "images/contactus_feedback_a.gif";
SubItemA [3][1] = "images/contactus_address_a.gif";

SubHLink [3] = new Array (countSubItems [3]);
SubHLink [3][0] = "content/feedback.html";
SubHLink [3][1] = "content/address.html";


// freie Stelle im Sub-Menu

var emptySubItem = "images/empty.gif";

</script>