/**
   *  Get Coookie by name
   */  
  function getCookie(Name) 
   { var search = Name + "="
     if (document.cookie.length > 0) 
     { // if there are any cookies 
       offset = document.cookie.indexOf(search)
       if (offset != -1) 
       { // if cookie exists                               
         offset += search.length                               
         // set index of beginning of value                              
         end = document.cookie.indexOf(";", offset)                               
         // set index of end of cookie value                              
         if (end == -1)                                         
         end = document.cookie.length                              
         return unescape(document.cookie.substring(offset, end))                    
       }           
     }
   }

  /**
   *  Set Cookie
   *  example of usage:
   *  var exp = new Date();
   *  exp.setTime(exp.getTime() + (7*24*60*60*1000));  // Expire in one week   	
   */  
  function setCookie(name, value, expire) 
  { 
    document.cookie = name + "=" + escape(value) + 
    ((expire == null) ? "" : ("; expires=" + expire.toGMTString()))
  }