$(document).ready(function(){
	// 斑马线
    bannerShow();
	var itemH = $('.mod li').width();
	if(itemH < 400) return;
	$('.mod li:odd').addClass('zera');

	// 首页显示slideshow
	if ($('#index').length > 0) {
		var ele = $('#slideshow');
		var link = $('#slideshow>a');
		var wrap = $('#slideshow>div');
		// 图片预加载
		(function(){
			var imgs = $(link);
			for(var i=imgs.length-1; i>=0; i--) {
				var img = new Image();
				var imgurl = $(imgs[i]).attr('rel');
				if(imgurl) img.src = imgurl;
			}
		})();

		// 自动播放
		var timer = null;
		var curimg = 1;
		var length = $(link).size();
		var showImg = function(index){
			var curli = $(link).eq(index);
			var imgsrc = curli.attr('rel');
			var linkurl = curli.attr('href');
			var linkEl = '<a href="'+linkurl+'">'+ curli.text() +'</a>';

			$(wrap).children('a').children('img').fadeTo('normal', 0.2, function(){
				$(this).attr('src', imgsrc).fadeTo('normal', 1.0).parent().attr('href', linkurl);
			});
			$('#slideshow h3').html(linkEl);
		}
		var autoshow = function() {
			timer = setInterval(function(){
					showImg(curimg);
					curimg = (curimg + 1) % length;
				}, 5000);
		}
		autoshow();
		$(ele).hover(function(){
				if(timer) clearInterval(timer);
			},autoshow
		);
	}
});

var bannercount = 0;
function bannerShow(){
    if(bannercount > 3) bannercount = 0;
    var src = 'images/bnindex'+bannercount+'.jpg';
    $("#banner").attr('src',src);
    bannercount ++;
    setTimeout('bannerShow()',5000);
}

function setMenu(menu){
    $("."+menu).addClass(menu+"_on");
}