var prefsLoaded = false;
var defaultFontSize = 76;
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_area') : document.all('content_area');
	document.body.style.fontSize = 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);
}