Window.close() Not Working In IE?

Parent opens child window through...

Code:

window.open('/modules/moduleWindow.php?moduleID=15&parentPriKeyID=8', 'Blog_Comment','status=0,toolbar=0,location=0,menubar=0,directories=0,resizable=0,scrollbars=0,heigh t=300,width=500' )

In child window user clicks a button which should so some stuff then close window. Works in non-ie.The button is has an onclick that does....

Code: addEditModule(0,'appendComment')

Code: function addEditModule(addEdit,nextFunction,disMsg){self.close();
if ( typeof(nextFunction) == "undefined" || nextFunction==null ) {
var nextFunction = '';[code].......

IE just seems to ignore the window.close(). I even tried putting it at the start of the function and still now dice.