/**
* Styleswitch stylesheet switcher built on jQuery
* Under an Attribution, Share Alike License
* By Kelvin Luck ( http://www.kelvinluck.com/ )
**/
var cookieName='oa-style';

$(document).ready(function() {
	$('.styleswitch').click(function()
	{
		switchStylestyle(this.getAttribute("rel"));
		createCookie(cookieName, this.getAttribute("rel"), 365);
		return false;
	});
	var c = readCookie(cookieName);
	if (c) switchStyle(c);
});

function switchStylestyle(styleName)
{
	switchStyle(styleName);
	//找到其所有iframe
	var arr = document.getElementsByTagName("iframe"); 
	for (var i = 0; i < arr.length; i++) 
	{ 
		//设置子iframe换肤
		var iframe1=arr[i].contentWindow;
		if(iframe1 && iframe1.switchStylestyle)
		{
			iframe1.switchStylestyle(styleName);
		}
	} 	
}
function switchStyle(styleName)
{
	var styleId=0;
	$('link[@rel*=style][@title]').each(function(i) 
	{
		this.disabled = true;
		if (this.getAttribute('title') == styleName)
		{
			styleId=i;
		}
	});
	//如果没有找到设置为默认的风格
	$('link[@rel*=style][@title]')[styleId].disabled=false;
}

// cookie functions http://www.quirksmode.org/js/cookies.html
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 var 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;
}
function eraseCookie(name)
{
	createCookie(name,"",-1);
}
// /cookie functions