function fontsizeup() {
				active = getActiveStyleSheet();
				switch (active) {
					case 'A--' : 
						setActiveStyleSheet('A-');
						break;
					case 'A-' : 
						setActiveStyleSheet('A');
						break;
					case 'A' : 
						setActiveStyleSheet('A+');
						break;
					case 'A+' : 
						setActiveStyleSheet('A++');
						break;
					case 'A++' :
						break;
					default :
						setActiveStyleSheet('A');
						break;
				}
			}

			function fontsizedown() {
				active = getActiveStyleSheet();
				switch (active) {
					case 'A++' : 
						setActiveStyleSheet('A+');
						break;
					case 'A+' : 
						setActiveStyleSheet('A');
						break;
					case 'A' : 
						setActiveStyleSheet('A-');
						break;
					case 'A-' : 
						setActiveStyleSheet('A--');
						break;
					case 'A--' : 
						break;
					default :
						setActiveStyleSheet('A--');
						break;
				}
			}

			function setActiveStyleSheet(title) {
				var i, a, main;
				for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
					if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
						a.disabled = true;
						if(a.getAttribute("title") == title) a.disabled = false;
					}
				}
			}

			function getActiveStyleSheet() {
				var i, a;
				for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
					if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
				}
				return null;
			}

			function getPreferredStyleSheet() {
				return ('A-');
			}

			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 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;
			}

			window.onload = function(e) {
				var cookie = readCookie("style");
				var title = cookie ? cookie : getPreferredStyleSheet();
				setActiveStyleSheet(title);
			}

			window.onunload = function(e) {
				var title = getActiveStyleSheet();
				createCookie("style", title, 365);
			}

			var cookie = readCookie("style");
			var title = cookie ? cookie : getPreferredStyleSheet();
			if (title == 'null') {
				title = getPreferredStyleSheet();
			}

			setActiveStyleSheet(title);