function setAccColours(sBack,sFore)
{
	if (sBack != sFore)
	{
		setCookie("accBack",sBack);
		setCookie("accFore",sFore);
		loadAccOptions();
	}
}

function setLinkColour(sColour)
{
	setCookie("link",sColour);
	loadAccOptions();
}

function setVisitedColour(sColour)
{
	setCookie("visited",sColour);
	loadAccOptions();
}

function setAccFont(sFont)
{
	setCookie("accFont",sFont);
	loadAccOptions();
}

function setCookie(sCookie, value)
{
	expiredays = 30;
	expireDate = new Date();
	expireDate.setTime(expireDate.getTime() + (expiredays * 24 * 3600 * 1000));

	document.cookie = sCookie + "=" + escape(value) +
						((expiredays == null) ? "" : "; expires=" + expireDate.toGMTString());
}

function getCookie(sCookie)
{
	// First we check to see if there is a cookie stored.
	// Otherwise the length of document.cookie would be zero.

	if (document.cookie.length > 0)
	{
		// Second we check to see if the cookie's name is stored in the
		// "document.cookie" object for the page.

		// Since more than one cookie can be set on a
		// single page it is possible that our cookie
		// is not present, even though the "document.cookie" object
		// is not just an empty text.
		// If our cookie name is not present the value -1 is stored
		// in the variable called "begin".

		begin = document.cookie.indexOf(sCookie+"=");
		if (begin != -1)
		{
			// Our cookie was set.
			// The value stored in the cookie is returned from the function.

			begin += sCookie.length + 1;
			end = document.cookie.indexOf(";", begin);
			if (end == -1)
				end = document.cookie.length;
			return unescape(document.cookie.substring(begin, end));
		}
	}

	return null;
}

function loadAccOptions()
{
	sFont = getCookie("accFont");
	if (sFont != null)
		document.body.style.fontFamily = sFont;

	sBack = getCookie("accBack");
	sFore = getCookie("accFore");
	if (sBack != null && sFore != null)
	{
		document.body.style.backgroundColor = sBack;
		document.body.style.color = sFore;
	}

	sLink = getCookie("link");
	if (sLink != null)
		document.linkColor = sLink;

	sVisited = getCookie("visited");
	if (sVisited != null)
		document.vlinkColor = sVisited;
}