// ###########################
// created by: Ben Weeks
// Created Date: 24th March 2008
// Company: webtechy.co.uk
//
// Modified By: 
// Modified Date: 
// Modified Comment: 
//
// Modified By: 
// Modified Date:
// Modified Comment: 
//
// Modified By: 
// Modified Date: 
// Modified Comment: 
//
// Version: 1.0
// ###########################

checkCurrentFontSize();

function ChangeFontSize(iFontSize)
{
	try{
		if (iFontSize < 2 && iFontSize > 0)
		{
			document.body.style.fontSize = "0.8em";
			eraseCookie("FontSizeValue");
			createCookie("FontSizeValue","1","30");
		}
		if (iFontSize < 3 && iFontSize > 1)
		{
			document.body.style.fontSize = "1em";
			eraseCookie("FontSizeValue");
			createCookie("FontSizeValue","2","30");
		}
		if (iFontSize < 4 && iFontSize > 2)
		{
			document.body.style.fontSize = "1.2em";
			eraseCookie("FontSizeValue");
			createCookie("FontSizeValue","3","30");
		}
	}
	catch(er)
	{
		// Oh well, it didn't work out - better luck next time.
	}	
}

function checkCurrentFontSize() // Checks the cookie to see if we need to resize.
{
	var iFontSize  = parseInt(readCookie("FontSizeValue"));
	if (iFontSize > 0 && iFontSize < 4)
	{
		ChangeFontSize(iFontSize);
	}
}

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 eraseCookie(name) {
	createCookie(name,"",-1);
}