function createCookie(name,value,days){
	 if (days) {
	     var date = new Date();
	     date.setTime(date.getTime()+(days*24*60*60*1000));
	     var expires = "; expires="+date.toGMTString();
	 }
	 else var expires = "";
	 document.cookie = name+"="+value+expires+"; path=/";
  }
  
  function readCookie(name) {
       var nameEQ = name + "=";
       if(document.cookie != null && document.cookie != '')
       {
	       var ca = document.cookie.split(';');
	       for(var i=0;i < ca.length;i++) {
	           var c = ca[i];
	           while (c.charAt(0)==' ') c = c.substring(1,c.length);
	           if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	       }
       }
       return null;
   }