var tp;
var max;

//10000=10秒
var changeTime = 10000;

$(function() {
	$('#mainRecommendBooks .textWrapper').jScrollPane({showArrows:true,scrollbarWidth:16});
		   
	max = $('#main .paginate li a').size();
	if(max > 1) {
		$('#main .paginate li a').each(function(index) {
			$(this).click(function() {
				changeRecommend(index);
			});
		});
		changeReccomendStart(1);
	}
	$('#main #mainRecommendBooks .sectionInner').css('display', 'none');
	$('#main #mainRecommendBooks .sectionInner:eq(' + 0 + ')').css('display', 'block');
});

function changeRecommend(i) {
	var on_image = $('#main .paginate li a[class*="selectedRecommend"] img[src*="_on"]').get();
	if(on_image[0].src.match(/.+_on\.(gif|jpg|jpe|jpeg|png)/)) {
		on_image[0].src = on_image[0].src.replace(/(.+)_on(\.(gif|jpg|jpe|jpeg|png))/, '$1$2');
	}
	$('#main #mainRecommendBooks .sectionInner').css('display', 'none');
	$('#main .paginate li a').removeClass('selectedRecommend');
	
	
	$('#main #mainRecommendBooks .sectionInner:eq(' + i + ')').css('display', 'block');
	var image = $('#main .paginate li:eq(' + i + ') a img').get();
	if(image[0].src.match(/.+\.(gif|jpg|jpe|jpeg|png)/)) {
		image[0].src = image[0].src.replace(/(.+)(\.(gif|jpg|jpe|jpeg|png))/, '$1_on$2');
	}
	$('#main .paginate li:eq(' + i + ')').children('a').addClass('selectedRecommend');
	
	clearTimeout(tp);
	
	if(i + 1 >= max) {
		changeReccomendStart(0);
	} else {
		changeReccomendStart(i + 1);
	}
}

function changeReccomendStart(i) {
	tp = setTimeout("changeRecommend(" + i + ")", changeTime);
}