// Cookie functions from: http://www.w3schools.com/JS/js_cookies.asp
function _setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function _getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
	{ 
	c_start=c_start + c_name.length+1; 
	c_end=document.cookie.indexOf(";",c_start);
	if (c_end==-1) c_end=document.cookie.length;
	return unescape(document.cookie.substring(c_start,c_end));
	} 
  }
return "";
}

function GetCurrentBodyFontSize()
{
	var className = document.body.className;
	
	if (className.indexOf('font-small') > -1)
		return 'font-small';
	else if (className.indexOf('font-medium') > -1)
		return 'font-medium';
	else if (className.indexOf('font-large') > -1)
		return 'font-large';
	else
		return 'font-unknown';
}

function GetCurrentBodyWidth()
{
	var className = document.body.className;
	
	if (className.indexOf('width-wide') > -1)
		return 'width-wide';
	else if (className.indexOf('width-fluid') > -1)
		return 'width-fluid';
	else
		return 'width-unknown';
}

function SetBodyFontSize(size)
{
	var currentClass = GetCurrentBodyFontSize();
	
	switch (size)
	{
		case 'small':
			document.body.className = document.body.className.replace(currentClass, 'font-small');
			break;
		case 'medium':
			document.body.className = document.body.className.replace(currentClass, 'font-medium');
			break;
		case 'large':
			document.body.className = document.body.className.replace(currentClass, 'font-large');
			break;
	}
	
	_setCookie('bodySize', size, 5);
}

function SetBodyWidth(width)
{
	var currentClass = GetCurrentBodyWidth();
	
	switch (width)
	{
		case 'wide':
			document.body.className = document.body.className.replace(currentClass, 'width-wide');
			break;
		case 'fluid':
			document.body.className = document.body.className.replace(currentClass, 'width-fluid');
			break;
	}
	
	_setCookie('bodyWidth', width, 5);
}

function CheckBodyDimensions()
{
	var size = _getCookie('bodySize');
	var width = _getCookie('bodyWidth');
	
	if (size)
		SetBodyFontSize(size);
	if (width)
		SetBodyWidth(width);
}