Mine

my_so = SharedObject.getLocal("idioma");
var idioma = my_so.data.idioma;


if(my_so.data.idioma == undefined){
	btn_castellano.onRelease = function(){
		my_so.data.idioma = "castellano";
		my_so.flush();
		}
	//
	btn_catalan.onRelease = function(){
		my_so.data.idioma = "catalan";
		my_so.flush();
		}
	}
else
	{
		btn_castellano.onRelease = function(){
		my_so.data.idioma = "castellano";
		my_so.flush();
		}
		//				
		btn_catalan.onRelease = function(){
		my_so.data.idioma = "catalan";
		my_so.flush();
		}
}