child window s not getting opened in IE version 8

Question

hi im using the below code for disabling the toolbar in child window. i have written the below code in login.js and called the function from jsp during body onload.

 function () { 
  if (!window.opener) { 
    window.open(/*...*/); 
  } 

the problem now im facing is tat wen i open in IE version 8 the pop up comes up asking

whether to close the window or not....

if i click yes or no the new child window is not getting opened......

i hope there is something problem wit code or IE properties is blocking the pop up window from opening ..............

can someone help???