var unit = '%';

var size = 90;

var defsize = 90;

var font = 'Arial';

var deffont = 'Arial';

var element = document.getElementsByTagName('body');

var cookiename = 'font';

var cookiedays = 30;

addLoadEvent(setFontFromCookies);

function addLoadEvent(func)
{
	var oldonload = window.onload;
	if(typeof window.onload != 'function')
	{
	  window.onload = func;
	} else {
	  window.onload = function()
		{
	    oldonload();
	    func();
	  }
	}
}

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 setFont()
{
	if(!(document.getElementById || document.all || document.layers)) return;

	createCookie(cookiename + '-family',font,cookiedays);
	createCookie(cookiename + '-size',size,cookiedays);

	for(var i = 0; i < element.length; i++)
	{
		element[i].style.fontFamily = font;
		element[i].style.fontSize   = size + unit;
	}
}

function setFontDefault()
{
	createCookie(cookiename + '-family','',-1);
	createCookie(cookiename + '-size','',-1);

	font = deffont;
	size = defsize;

	setFont();
}

function setFontFamily(param)
{
	font = param;
	setFont();
}

function setFontSize(param)
{
	if(param == 0) size = 95;
	if(param == 1) size = 100;
	if(param == -1) size = 90;
	else size = parseInt(size)+parseInt(param);
	setFont();
}

function setFontFromCookies()
{
	var tmp_font = readCookie(cookiename + '-family');
	var tmp_size = readCookie(cookiename + '-size');

	if(tmp_font != null) font = tmp_font;
	if(tmp_size != null) size = tmp_size;

	setFont();
}
/***
	* Copyright (c) 2007 Pavol Biely
**/