open recently closed item using javascript

hii

i am new to aras , i want to close item which is open on screen and again i want to open it using javascript for that i write following code

var item = document.thisItem;

var inn= new Innovator;

var packmtrl = inn.newItem("Symbi_Pack_MterialRecons","get");
packmtrl.setProperty("id",item.getID());
var respack=packmtrl.apply();
var iid=respack.getProperty("id");

 top.aras.uiCloseWindowEx(item.getID());
 top.aras.uiOpenWindowEx('iid','packmtrl','alertErrorWin');

but i am not able to open item which i closed using  top.aras.uiCloseWindowEx(item.getID());