_width question on some code example

A while back one of our members wrote this piece of code and I’m trying to figure it out. I got 90% down but I can’t figure where the _width value is coming from. I looked in the debugger section and now results. Can someone please explain in detail this to me? I know what is the _root.container is coming from but the _width is a mystery to me. If the author or someone can please explain the below AS script to me I will greatly appreciate it.

Thanks.

if (_root.container=_width){
trace(“container” + _root.container);
trace(“width”+ _width + "
");

_root.barimg.onEnterFrame = function() {
bytes_loaded = _root.slika.getBytesLoaded();
bytes_total = _root.slika.getBytesTotal();
getPercent = Math.round(bytes_loaded/bytes_total*100);
getPercenttext=getPercent+"%";
this._width=getPercent*1.91;

};

I attached the .fla and the AS code is in frame #8.