<!--hide this script from non-javascript-enabled browsers

//////////////////////////////////////////////////////////
//
// SpectraSchool
//
// Produced by Presenting Science
//  www.PresentingScience.com
//
// Copyright (C)SpectraSchool &
//       Presenting Science 2007 - 2009
//
//////////////////////////////////////////////////////////

 function readCookie(l) {
    var c = document.cookie;
    var pos = c.indexOf(l);
    if (pos != -1) {
         var start = pos+l.length;
         var d = c.substring(start, c.length)
         var end = d.indexOf(";");
         if (end == -1) end = d.length;
         var h = d.substring(0, end);
         h = unescape(h);
         if (h.length>0) {
            return h;
        }
    }
    return "";
}
 function writeCookie(l, value, expires) {
     var nextYear = new Date();
     nextYear.setFullYear(nextYear.getFullYear()+1);	// Will last for one year
     if (expires) document.cookie = l+escape(value) + "; expires=" + nextYear.toGMTString();
     else document.cookie = l+escape(value) ;
 }
// stop hiding -->
