var disappear_duration = 300 / 1000;
var appear_duration    = 1800 / 1000;

function photo_show (img_src, dest_id, origin){
	dest_id = $('photo0');
	if (img_src != dest_id.src) {
		if (origin) {
			Effect.Pulsate($(origin), { pulses: 2, duration: 0.3 });
		}
		Effect.Fade(dest_id, {duration:(disappear_duration)});
		setTimeout('$("' + dest_id.id + '").src=\'' + img_src + '\';Effect.Appear("' + dest_id.id + '", {duration:' + (appear_duration) + '});', disappear_duration * 1000);
	}
}