åbne i samme vindue

Jeh har følgende udsnit af mit script:

//Create main menu
var menu = new menuObject("menu",pageWidth/2,pageHeight/1.8,"(Someones)Design",pageHeight/2);
menu.startAngle = -45;

//show menu and caption
menu.show();
menu.showCaption();

//Add submenus
menu.addItem("nyheder","window.open('http://www.someonesdesign.dk/Someones%20design-filer/slide0001.htm')");
menu.addItem("Profilen","toggle");
menu.addItem("Arbejdsmetoder","toggle");
menu.addItem("Portfolio","toggle");


menu.subMenus[1].addItem("Hvem er vi?","window.open('D:/Falken/Real/hvem_er_vi.htm')");
menu.subMenus[1].addItem("Beliggenhed","window.open('/script/script17.asp')");
menu.subMenus[1].addItem("Faciliteter","window.open('/script/script16.asp')");
menu.subMenus[1].addItem("Vores mål","window.open('/script/script15.asp')");


menu.subMenus[2].addItem("Hvorfor bruge designere?","window.open('/tutorials/tutorial5.asp')");

menu.subMenus[2].addItem("Hvorfor vælge os?","window.open('/tutorials/tutorial4.asp')");
menu.subMenus[2].addItem("Referanceliste","window.open('/tutorials/tutorial3.asp')");



menu.subMenus[3].addItem("Industriel design","window.open('/forums')");
menu.subMenus[3].addItem("Møbel design","window.open('/forums/forum.asp?FORUM_ID=1&CAT_ID=1&Forum_Title=Cool+sites')");
menu.subMenus[3].addItem("Grafisk design","window.open('/forums/forum.asp?FORUM_ID=2&CAT_ID=1&Forum_Title=CoolMenus')");
menu.subMenus[3].addItem("Diverse","window.open('/forums/forum.asp?FORUM_ID=3&CAT_ID=1&Forum_Title=Crossbrowser+DHTML')");


Hvordan for jeg det til at åbne i samme vindue som det er i og ikke åbne linket i et nyt vindue.