function chfontsize(a){
	var content=document.getElementsByTagName('body')[0];
	if (a == '+'){
		content.style.fontSize = '.85em'; 
 	}
	if (a == '-'){
		 content.style.fontSize -= 1;
	}
	//b = ("size"+size);
 	//content.className=b;
	//setsize(b);
	//SetCookie ('fontsize', b, exp);
}
function setCookie() {
		if(arguments.length < 2) { return; }
		var n = arguments[0];
		var v = arguments[1];
		var d = 0;
		if(arguments.length > 2) { d = parseInt(arguments[2]); }
		var exp = '';
		if(d > 0) {
			var now = new Date();
			then = now.getTime() + (d * 24 * 60 * 60 * 1000);
			now.setTime(then);
			exp = '; expires=' + now.toGMTString();
			}
		document.cookie = n + "=" + escape(String(v)) + '; path=/' + exp;
		} // function SetCookie()

	function readCookie(n) {
		var cookiecontent = new String();
		if(document.cookie.length > 10) {
			var cookiename = n+ '=';
			var cookiebegin = document.cookie.indexOf(cookiename);
			var cookieend = 0;
			if(cookiebegin > -1) {
				cookiebegin += cookiename.length;
				cookieend = document.cookie.indexOf(";",cookiebegin);
				if(cookieend < cookiebegin) { cookieend = document.cookie.length; }
				cookiecontent = document.cookie.substring(cookiebegin,cookieend);
			}
		}
		return unescape(cookiecontent);
	} // function ReadCookie()