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;
					//document.write(document.cookie.substring(begin, end));
      				return unescape(document.cookie.substring(begin, end));
				} 
  			}
			return null;  
		}

	function setCookie(NameOfCookie, value, expiredays) 
		{
  		var ExpireDate = new Date ();
  		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";
		}
		}