function setScaleCookie (name, value, nDays) {
	var argv = setScaleCookie.arguments;
	var argc = setScaleCookie.arguments.length;
	var expires = new Date();
	var today = new Date();
//	var expires = (argc > 2) ? argv[2] : null;
	if (nDays==null || nDays==0) nDays=1;
		expires.setTime(today.getTime() + 3600000*24*nDays);
	var path = (argc > 3) ? argv[3] : null;
	var domain = (argc > 4) ? argv[4] : null;
	var secure = (argc > 5) ? argv[5] : false;
	document.cookie = name + "=" + escape (value) +
	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
	((path == null) ? "" : ("; path=" + path)) +
	((domain == null) ? "" : ("; domain=" + domain)) +
	((secure == true) ? "; secure" : "");
 }

function eraseCookie(name) {
    setScaleCookie(name,"",-1);
} 

function setNormalTextSize() {
	eraseCookie("basefontsize");
	bodyelem.style.fontSize = "100%";
}

function scaleText(percentage, set_cookie) {
	/* scale text only if percentage is not equal to default font size */
	defaultfontsize = "100"; /* set to font-size on body element */
	bodyelem = document.getElementsByTagName("body")[0];
	if (percentage != defaultfontsize){
		bodyelem.style.fontSize = percentage + "%";
	}
	if ((percentage == defaultfontsize)&&(set_cookie)){
		bodyelem.style.fontSize = percentage + "%";
	}
	if (set_cookie){
		setScaleCookie("basefontsize", percentage, 365, "/");
	}
}

function inspectFontSizeCookie() {
	value = GetMyCookie("basefontsize");
	if (value){
		scaleText(value, set_cookie=false);
	}
}

function GetMyCookie (name) {
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while (i < clen) {
		var j = i + alen;
		if (document.cookie.substring(i, j) == arg) {
			return getCookieVal (j);
		}
		i = document.cookie.indexOf(" ", i) + 1;
		if (i == 0) break;
	}
	return null;
}

function getCookieVal (offset) {
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr == -1)
		endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr));
}