// JavaScript Document
/*------------------------- fontchanger.js --------------------------
*/
var prefsLoaded = false;
var defaultFontSize = 88;
var currentFontSize = defaultFontSize;

function revertStyles()
{
    currentFontSize = defaultFontSize;
    changeFontSize(0);
}

function toggleColors()
{
    if(currentStyle == "White")
    {
            setColor("Black");
    }
    else
    {
            setColor("White");
    }
}

function changeFontSize(sizeDifference)
{
    currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * 5);
    if(currentFontSize > 100)
    {
		currentFontSize = 100;
    }
    else if(currentFontSize < 60)
    {
		currentFontSize = 60;
    }
	setFontSize(currentFontSize);
}

function setFontSize(fontSize)
{
	var stObj = (document.getElementById) ? 
		document.getElementById('content_text') :
		document.all('page');
        document.body.style.fontSize = fontSize + '%';

	//alert (document.body.style.fontSize);
}

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 = setUserOptions;

function setUserOptions()
{
	if(!prefsLoaded)
	{
		cookie = readCookie("fontSize");
		currentFontSize = cookie ? cookie : defaultFontSize;
		setFontSize(currentFontSize);
		prefsLoaded = true;
	}
}

window.onunload = saveSettings;

function saveSettings()
{
	createCookie("fontSize", currentFontSize, 365);
}