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 toggleStylesheet(ev)
{
	var title;
	
	if(ev.target)
	{
		title = removeClass(ev.target.className, 'active');
	}
	if(ev.srcElement)
	{
		title = removeClass(ev.srcElement.className, 'active');
	}
	setActiveStyleSheet(title);
	setVisuals(title);
}

function setVisuals(title)
{
	var fontSwitches = document.getElementById('fontsize').getElementsByTagName('a');

	for(var i = 0; i < fontSwitches.length; i++)
	{
		if(hasClass(title, fontSwitches[i].className))
		{
			fontSwitches[i].className = addClass(fontSwitches[i].className, 'active');
		}
		else
		{
			fontSwitches[i].className = removeClass(fontSwitches[i].className, 'active');
		}
	}
}

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;
}

function hasClass(classname, classes)
{
	var class_strings;
	var i;

	if (!classes) classes = '';
	class_strings = classes.split(' ');
	for (i = 0; i < class_strings.length; i++)
	{
		if (class_strings[i] == classname) return(true);
	}
	return(false);
}

function removeClass(old, remove)
{
	var classes;
	var i;
	var f = null;

	if (!old) old = '';
	classes = old.split(' ');
	for (i = 0; i < classes.length; i++)
	{
		if (classes[i] == remove) f = i;
	}
	if (f != null) classes.splice(f, 1);
	return(classes.join(' '));
}

function addClass(old, toadd)
{
	var classes;
	var i;
	var f = null;

	if (!old) old = '';
	classes = old.split(' ');
	for (i = 0; i < classes.length; i++)
	{
		if (classes[i] == toadd) f = i;
	}
	if (f == null) classes.push(toadd);
	return(classes.join(' '));
}