IE Error after openening a child window

var users_names=window.opener.users_names;
var users_data =window.opener.users_data;
var objects    =window.opener.objects;
var removed_users=window.opener.removed_users;
var my_notify_bits=0;

var space=' ';
var show_pictures2;
var att_game, att_team1, att_team2, the_team, att_list, n_att;
var my_group, other_user;
var is_child_window=1;

function open_att(vars,user)
{
 var v=vars.split('_');
 i_user=user;
 is_att=1;
 show_pictures2=true;
 from_attend=true;
 from_log=0;
 
 init_dictionary();
 var obj=getobj('main');
 translatePage(obj);
 
 att_game  =v[0];
 att_team1 =v[1];
 att_team2 =v[2];
 the_team  =v[3];
 var time  =v[4];
 att_list  =v[5];
 other_user=v[6];
 	  
 from_user=0;
 next_user=0;
 my_notify_bits=0x8000; // show pictures;
 
 fans_item=the_team;
 fans_users="";
 n_att=0;
 
 var obj=getobj('the_game');
 obj.innerHTML=objects[att_game][1].replace(/<br>/,' ');
 obj.style.fontSize="16px"
 set_obj_color(obj,"red","bold");

 var obj=getobj('the_pair0');
 obj.style.fontSize="16px"
 set_obj_color(obj,"red","bold");

 var str="";
 if (time)  
 {
  str='&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<font color="YellowGreen">['+get_expiration(time)+']</font>';
 }
 var obj=getobj('the_pair1');
 obj.innerHTML=objects[att_team1][1]+' <img src="../Images/Icons/rightleft_16.png" align="center"/> '+objects[att_team2][1]+str;
 obj.style.fontSize="16px"
 set_obj_color(obj,"blue","bold");

 var obj=getobj('title');
 obj.style.fontSize="16px"
 set_obj_color(obj,"green","bold");
 
 open_att1(0);
}

function open_att1(only_att)
{ 
 if (only_att) only_att=1; else only_att=0;
 users_status=new Array();
 
 var obj=getobj('fans_list');
 obj.innerHTML="";
 
 var get_me=1;
 if (other_user) get_me=get_me;
 var  index=post_to_php('^get_fans_status.php?att=1&users=&only_att='+only_att+'&object='+the_team+'&get_me='+get_me+'&n_lines='+n_users_per_page+'&removed='+removed_users+'&log=0&next=0');
 ajax[index].onCompletion =  function() { reply_get_fans_status(index,2); };
 ajax[index].runAJAX();
} 
 
function reply_leag_add_att(index)
{
 var  data_str=debug_alert(ajax[index].response);
 if (!data_str) return;
 var data=json_decode(data_str);
 
 for (var i in data)
 {
  the_team =i;
  fans_item=i;
  window.opener.setObject(i,data[i]);
 }
 window.opener.change_att(att_game,att_list,att_team1,att_team2,n_att,fans_item);
 
 show_users();
}

function get_user_link(user)
{
 var  user_name=users_names[user];
 if (!user_name) return '';
 if (!users_data[user]) return user_name;
 var fbid=users_data[user][0];
 return '<a href="http://www.facebook.com/profile.php?id='+fbid+' target="_blank">'+user_name+'</a>';
}


function get_expiration(time1)
{
 var time=time1;
 var now=new Date().getTime();
 time/=60;
 now/=60000;
 var diff=parseInt(now-time);
 var before=false;
 if (diff < 0)
 {
  before=true;
  diff=-diff;
 }
 var date0='';
 
 if  (diff < 60*24*60)
 {
  if (diff < 60)    {a1=diff;                   a2=minutes;}
  else
  if (diff < 24*60) {a1=parseInt(diff/60);      a2=hours;}
  else
                    {a1=parseInt(diff/(24*60)); a2=days;}

  if (before)
  {
   date0=get_in_time.replace(/\*1/,a1).replace(/\*2/,a2);
  }
  else
  {
   date0=get_time_ago.replace(/\*1/,a1).replace(/\*2/,a2);
  }
 } 

 var e=new Date(time1*1000);
 var day=e.getDay();

 return tt1(window.opener.week_days[day])+'&nbsp;&nbsp;'+date0;
}

function jQgridHandler(obj,column){}
function clickGridRow(obj,rowid){}

function show_att_header()
{ 
 var status=users_status[the_team+'_'+i_user];
 
 var show="none"
 if (!status)
 {
  var show='';
  var obj=getobj('add_comment');
  obj.innerHTML=roll(0,'add_comment()','comment_add.png','',0)+space+tt1("Add new comment.");
  obj.style.fontSize="16px"
  set_obj_color(obj,"red","bold");
 }
 var obj=getobj('new_user_comment');
 obj.style.display=show;
 var text=tt1('I will attend the game.');
 
 if (status && (status[5] > 0))
 {
  var text='<img src="../Images/Icons/check.png"/>'+text;
 }
 else
 {
  var text=roll(0,'add_me()','../Icons/plus.png','',0)+' <font size="3"><b><a href="javascript:add_me()">'+text+'</a></b></font>';
 }
 var obj=getobj('add_me');
 obj.innerHTML=text;
 obj.style.fontSize="16px"
 set_obj_color(obj,"YellowGreen","bold");
}

function add_me()
{
 var text=tt1("I will attend the game.");
 set_comment(text,1,2);
}


function remove_my_comment()
{
 var  index=post_to_php('^rem_attend.php?object='+the_team);
 ajax[index].onCompletion =  function() { reply_rem_attend(index); };
 ajax[index].runAJAX(); 
 
 users_status=extract_array4(users_status,the_team+'_'+i_user);
 show_att_header();
 from_log=0;
 show_fans();
}

function reply_rem_attend(index)
{
 var  data_str=debug_alert(ajax[index].response);
}

function add_comment()
{
 var obj=getobj('add');
 obj.style.display="";
}

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