function getCookie(NameOfCookie)
{

  if (document.cookie.length > 0) 
{ 
    begin = document.cookie.indexOf(NameOfCookie+"="); 
    if (begin != -1)  
   { 

     begin += NameOfCookie.length+1; 
      end = document.cookie.indexOf(";", begin);
      if (end == -1) end = document.cookie.length;
      return unescape(document.cookie.substring(begin, end));       } 
  }
return null;  
}

function setCookie(NameOfCookie, value, expiredays) 
{

  var ExpireDate = new Date ();
 // 	alert(NameOfCookie);
//	alert(value);
//	alert(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
  ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));

  document.cookie = NameOfCookie + "=" + escape(value) + 
  ((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
}

function delCookie (NameOfCookie) 
{
  if (getCookie(NameOfCookie))
  {
	  document.cookie = NameOfCookie + "=" + 
	    "; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}