// Published on October 31, 2006 for Possibilities 
//   ezine. See http://BontragerCGI.com/ article titled 
//   "Setting and Reading Cookies with JavaScript."
//
// These functions set and read cookies. See article 
//   mentioned above for information and instructions.
//
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 readCookie(n) {
    var cookiecontent = new String();
    if(document.cookie.length > 0) {
	    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);
}