function getCookieVal (offset)
{
var
 endstr = document.cookie.indexOf (";", offset);

if (endstr == -1)
 endstr = document.cookie.length;

return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name)
{
var
 arg = name + "=";
var
 alen = arg.length;
var
 clen = document.cookie.length;
var
 i = 0;

while (i < clen)
 {
 var j = i + alen;

 if (document.cookie.substring(i, j) == arg)
  return getCookieVal (j);

 i = document.cookie.indexOf(" ", i) + 1;

 if (i == 0)
  break;
 }

return null;
}

function SetCookie (name,value,expires,path,domain,secure)
{
document.cookie = name + "=" + escape (value) +
    ((expires) ? "; expires=" + expires.toGMTString() : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "");
}

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";
 }
}