var fontsize = 0;

function fontsizeup() 
{
	switch (fontsize) 
	{
		case 0 : 
			setActiveStyleSheet('big');
			fontsize = 1;
			break;
		case 1 : 
			setActiveStyleSheet('huge');
			fontsize = 2;
			break;
	}
	createCookie("fontsize", fontsize, 365);
}

function fontsizedown() 
{
	switch (fontsize) 
	{
		case 2 : 
			setActiveStyleSheet('big');
			fontsize = 1;
			break;
		case 1 : 
			setActiveStyleSheet('normal');
			fontsize = 0;
			break;
	}
	createCookie("fontsize", fontsize, 365);
}

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 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("fontsize");
	if (cookie) 
	{
		fontsize = parseInt(cookie);
		switch (fontsize) 
		{
			case 0 : 
				setActiveStyleSheet('normal');
				break;
			case 1 : 
				setActiveStyleSheet('big');
				break;
			case 2 : 
				setActiveStyleSheet('huge');
				break;
		}
	}
}