Dwr not work in IE

Hi,
I have some problems with dwr and i don't know how solve my problem! Please HELP me.
I use dwr 2.0.5 + Spring 2.5
I open a new window using javascript:

window.open('ic.form?user='+e.user,'window_session', 'toolbar=0, location=0,'
                                        +'directories=0, status=0, menubar=0, resizable=0,'+
                                          'scrollbars=0,width=328,height=120,top='+nTop+',left='+nLeft,'false');
                                }

in opened window:

onload="javascript:listenEvent('user1');"

 function listenEvent(u){
        init();
            user = u;
            dwr.engine.setActiveReverseAjax(true);
          Queue.setEvent();
            }

and when dwr.engine.setActiveReverseAjax(true) is invoked, the page is blocked!!! but if page is opened not in separate window, i have not any problem! I need to open the page only in separate window! HELP ME and sorry for my English!
In firefox it don't reproduce!

my dwr settings:

         <dwr:controller id="dwrController" debug="true">
         <dwr:config-param name="activeReverseAjaxEnabled" value="true" />
         <dwr:config-param name="maxWaitAfterWrite" value="-1" />
         </dwr:controller>