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;
			}
		}
	}
	
	// Underline the right font selector element
	for (i = 0; (a = document.getElementsByTagName("span")[i]); i++)
	{
		if (a.className.indexOf("fontSelector-" + title) != -1)
		{
			a.style.textDecoration = "underline";
		}
		else
		{
			a.style.textDecoration = "none";
		}
	}
}

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;
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);