this.onEnterFrame( b = 1 );

var libro = ( "book" + b );
//trace( "libro = " + libro );

var libromas = ( "book" + ( b + 1 ) );
//trace( "libromas =" + libromas );

var libromenos = ( "book" + (b - 1 ) );
//trace( "libromenos = " + libromenos );

forwardbtn.onRelease = function() {
	if ( b <= 22 ) {
		_root.libro.slideTo( "600" , "0", 0.5, "easeInSine");
		_root.libromas.slideTo( "-600" , "0", 0.5, "easeOutSine", 0.75);
	} else {
		if ( b == 23 ) {
			_root.book23.slideTo( "600" , "0", 0.5, "easeInSine");
			_root.book1.slideTo( "-600" , "0", 0.5, "easeOutSine", 0.75);
		} else {
			trace( "ZEE GOGGLES!! ZEY DO NOZZING!!" );
		};
	};
};

backbtn.onRelease = function() {
	if ( b >= 2 ) {
		_root.libro.slideTo( "600" , "0", 0.5, "easeInSine");
		_root.libromenos.slideTo( "-600" , "0", 0.5, "easeOutSine", 0.75);
	} else {
		if ( b == 1 ) {
			_root.book1.slideTo( "600" , "0", 0.5, "easeInSine");
			_root.book23.slideTo( "-600" , "0", 0.5, "easeOutSine", 0.75);
		} else {
			trace( "ZEE GOGGLES!! ZEY DO NOZZING!!" );
		};
	};
};