// name - name of the cookie
// value - value of the cookie
// [expires] - expiration date of the cookie (defaults to end of current session)
// [path] - path for which the cookie is valid (defaults to path of calling document)
// [domain] - domain for which the cookie is valid (defaults to domain of calling document)
// [secure] - Boolean value indicating if the cookie transmission requires a secure transmission
// * an argument defaults when it is assigned null as a placeholder
// * a null placeholder is not required for trailing omitted arguments
function setCookie(name, value, expires, path, domain, secure) {
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
  document.cookie = curCookie;
}

// name - name of the desired cookie
// * return string containing value of specified cookie or null if cookie does not exist
function getCookie(Cval) {

var idx = 0;

switch(Cval.toLowerCase())
   {
      case "dnfname" :
           idx = 0;
           break;

      case "dnlname" :
            idx = 1;
           break;

      case "dnportal" :
            idx = 2;
           break;
     
      case "dnairmne" :
            idx = 3;
           break;
     
      case "dnemail" :
            idx = 4;
           break;
     
      case "dnmemberclass" :
            idx = 5;
           break;
     
      case "dnstatus" :
            idx = 6;
           break;
     
      case "dncncl_no" :
           idx = 7;
           break; 
           
      case "dnalpa_no" :
           idx = 8;
           break; 
           
      case "dnblock_no" :
		   idx = 9;
		   break;
   }

  var dc = document.cookie;
  var prefix = "portaluserdata=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
    
  var ccontent = unescape(dc.substring(begin + prefix.length, end));    
  var cvalues = ccontent.split("&");
  var idxval = cvalues[idx];
  var rval = idxval.split("=");
  
  return rval[1];  
}

// name - name of the cookie
// [path] - path of the cookie (must be same as path used to create cookie)
// [domain] - domain of the cookie (must be same as domain used to create cookie)
// * path and domain default if assigned null or omitted if no explicit argument proceeds
function deleteCookie(name, path, domain) {
  if (getCookie(name)) {
    document.cookie = name + "=" + 
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

// date - any instance of the Date object
// * hand all instances of the Date object to this function for "repairs"
function fixDate(date) {
  var base = new Date(0);
  var skew = base.getTime();
  if (skew > 0)
    date.setTime(date.getTime() - skew);
}