function cookie_finder(nm)
{
	if (navigator.cookieEnabled == false) {
		return null;
	}
	else {
		var result = new String(null);
		var cookies = document.cookie.split("; ");

		for (var i = 0; i < cookies.length; i++) {
			if (cookies[i].split("=")[0] == nm) {
				result = cookies[i].split("=")[1];
			}
		}
		return result;
	}
}

function change_serif(i)
{
	var cBod = document.getElementById("mainBG");
	var cookieVal = cookie_finder("typeface");
	var setVal = new String(null);
	var expireDate = new Date();
	expireDate.setMonth(expireDate.getMonth()+120);
	
	if (i == 0) {
		if (cookieVal == "sans-serif") {
			cBod.style.fontFamily = 'Arial, Helvetica, sans-serif'
		}
		else {
			cBod.style.fontFamily = 'Georgia, "Times New Roman", Times, serif';
		}
	} else {
		if (cookieVal != "sans-serif") {
			cBod.style.fontFamily = 'Arial, Helvetica, sans-serif';
			setVal = "sans-serif";
		}
		else {
			cBod.style.fontFamily = 'Georgia, "Times New Roman", Times, serif';
			setVal = "serif";
		}
		document.cookie = "typeface=" + setVal + "; expires=" + expireDate.toGMTString() + "; path=/";
	}
}