getURL _self

[font=verdana, arial, helvetica][size=2]Hello,
I’ve created an html with a link calling a New URL, with certain measures and in which a swf is played. That works fine.

The idea is to make a slide show with next and previous buttons. So this swf, has a NEXT button with the order "on (press) {get
URL(“mymovie2.swf”, _self);}. This also works fine.
The new swf, has also this NEXT button calling mymovie3.swf in _self and so on, up to mymovie10.swf.

The problem is that after pressing a NEXT button for the second time, the next swf doesn’t open in the same window but in a new one. Why? How can I resolve this?
Thank you.[/size][/font]