function picture_frame_fade(num) {	
	Effect.Fade("picture_frame_image_"+num, {duration: 2});
	setTimeout("picture_frame_appear("+(num+1)+")", 0.5);
}

function picture_frame_appear(num) {
	if (num>($$("img.picture_frame_image").size()-1)) num = 0;
	Effect.Appear("picture_frame_image_"+num, {duration: 2});
	setTimeout("picture_frame_fade("+(num)+")", 5000);
}