function getCookieVal (offset) {
    var endstr = document.cookie.indexOf (";", offset);
    if (endstr == -1)
        endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
}
function GetCookie (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 SetCookie (name, value) {
    var argv = SetCookie.arguments;
    var argc = SetCookie.arguments.length;
    var expires = (argc > 2) ? argv[2] : null;
    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 DeleteCookie() {
   var exp = new Date();
   exp.setTime (exp.getTime() - 1000000000);  // This cookie is history (changed -1 to make it previous time)
   var cval = GetCookie ('DemoName');
   document.cookie ='DemoName' + "=" + cval + "; expires=" + exp.toGMTString();
   alert("The cookie has been deleted.");
}



window.addEvent('domready', function() {
    var font = 0.8;
    cookieFont = GetCookie('fontsize');
    if(cookieFont > 0){
        var morph = new Fx.Morph($(document.body),{unit:'em'});
        morph.set({'font-size': cookieFont});
    }
    $('normal').addEvent('click', function(e) {
        e.stop();
        var morph = new Fx.Morph($(document.body),{unit:'em'});
        morph.set({'font-size': 0.8});
        SetCookie('fontsize',0.8);
    });
    $('big').addEvent('click', function(e) {
        e.stop();
        var morph = new Fx.Morph($(document.body),{unit:'em'});
        morph.set({'font-size': 0.9});
        SetCookie('fontsize',0.92);
    });
    $('bigger').addEvent('click', function(e) {
        e.stop();
        var morph = new Fx.Morph($(document.body),{unit:'em'});
        morph.set({'font-size': 1.0});
        SetCookie('fontsize',1);
    });
});