How do I change button skin with function arguments?

Question

Hi guys, I am building a map witch I represent with buttons grid 40*26, now I wont to create a function in action script that will get a string that contains the folder name where I am storing the buttons skin data for example:
[Embed("maps/grass/upSkin.jpg")]
private var _upSkin:Class;
[Embed("maps/grass/overSkin.jpg")]
private var _overSkin:Class;
[Embed("maps/grass/downSkin.jpg")]
private var _downSkin:Class;
private function changeMap():void
     slot:Button=new Button();
     slot.setStyle("upSkin",test);
     slot.setStyle("overSkin",_overSkin);
     slot.setStyle("downSkin",_downSkin);
This is what I managed to do up to now, what I would like to do is to send to changeMap() a string with the path name, but some how I can't embed a variables, I will be glade if you could find a solution for that.
This is the link for my site, so you can see what I am talking about. I am not always online but you can try.
http://gazmanwars.zapto.org/
*Best view under 1280*960 rez

Answer 1

in this case StyleManager.loadStyleDeclarations(currentTheme + ".swf"); can come handy.This satement will load new style Declarations for your application on runtime whenever you want.
currentTheme will be your css file containing styles compiled into swf by flex builder  you can do that by right clicking on css file and selecting
Compile Css To Swf
for more information on style Manager see following link
http://livedocs.adobe.com/flex/3/html/help.html?content=styles_07.html