function clearDefault(el) {
	if (el.defaultValue==el.value) el.value = ""
}

function restoreDefault(el) {
	if (el.value=="") el.value = el.defaultValue
}


$(document).ready(function(){
	$("a[rel^='prettyPhoto']").prettyPhoto({animationSpeed:'slow',theme:'dark_square',slideshow:20000, autoplay_slideshow: true});
});