// Javascript switch CSS 

$(document).ready(function(){
//特別公告
$(".flyin").animate({"width": "+=500px"}, 7000);
//tab
	var _showTab = 0;
	$('ul.tabs li').eq(_showTab).addClass('active');
	$('.tab_content').hide().eq(_showTab).show();		
	$('ul.tabs li').click(function() {
		var $this = $(this),
			_clickTab = $this.find('a').attr('href');
			$this.addClass('active').siblings('.active').removeClass('active');
			$(_clickTab).stop(false, true).fadeIn().siblings().hide();
		return false;
	}).find('a').focus(function(){
		this.blur();
	});

//回到最上
$('.gotop a').click(function(){
var $body = (window.opera) ? (document.compatMode == "CSS1Compat" ? $('html') : $('body')) : $('html,body');
$body.animate({
	scrollTop: 0
	},500^1.5);
	return false;
});

});

function setActiveStyleSheet(title) {
    var i, a, main;
    for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
        if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
            a.disabled = true;
            if(a.getAttribute("title") == title) a.disabled = false;
        }
    }
}
 
function getActiveStyleSheet() {
    var i, a;
    for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
        if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
    }
    return null;
}
 
function getPreferredStyleSheet() {
    var i, a;
    for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
        if(a.getAttribute("rel").indexOf("style") != -1
            && a.getAttribute("rel").indexOf("alt") == -1
            && a.getAttribute("title")
        ) return a.getAttribute("title");
    }
    return null;
}
 
function createCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
    }
    else expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
}
 
function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}
 
window.onload = function(e) {
    var cookie = readCookie("style");
    var title = cookie ? cookie : getPreferredStyleSheet();
    setActiveStyleSheet(title);
}
 
window.onunload = function(e) {
    var title = getActiveStyleSheet();
    createCookie("style", title, 365);
}
 
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);