//-----------------------------//
//      file: cookies.js       //
//-----------------------------//

function getCookie(name) { //use: getCookie ("name"); "name"= name of the cookie
   if (document.cookie.length > 0) { //no cookie is saved
      var begin = document.cookie.indexOf(name+"="); //looking for this precise cookie
      if (begin != -1) { // this precise cookie was found
         begin += name.length+1; 
         var end = document.cookie.indexOf(";", begin);
         if (end == -1) end = document.cookie.length;
         return unescape(document.cookie.substring(begin, end));                
      }          
   }
   return null; 
}
      
function setCookie(name, value, expiredays) {
   var ExpireDate = new Date ();
   ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
   document.cookie = name + "=" + escape(value) + 
   ((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
}
      
function delCookie (name) { 
   if (getCookie(name)) {      
      document.cookie = name + "=" +"; expires=Thu, 01-Jan-70 00:00:01 GMT";
   }
}