Open xml based flash buttons in same window of Browser

want to know how to open xml based flash buttons in the same window of the browser...Im developing a website and i got a xml based flash buttons but when i click on them they open in the new window rather than in the same window....
I have tried all the attributes in like _parent, _blank etc but they still open in the new window when clicked....
The flash file also has some script in the actions panel to the button...Does it imply that i have to make changes in the actionscript code.???
Im novice to both xml and actionscript....
If anyone can help me out without posting the code then well and good....If not then i can post both xml and actionscript codes...
Plz let me know...Thankx

Have also been searching.
Is it:
var _newLoader:newLoader = new Loader();
addChild(_newLoader);

with
removeChild(previousLoader);
Linked to previous loader name.

Then specify the data ("data.xml") to load.

??