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) {  
  var argv = SetCookie.arguments;  
  var argc = SetCookie.arguments.length;  
  var expires = (argc > 2) ? argv[2] : null;  
  var path = (argc > 3) ? argv[3] : null;  
  var domain = (argc > 4) ? argv[4] : null;  
  var secure = (argc > 5) ? argv[5] : false;  
  document.cookie = name + "=" + escape (value) + 
  ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
  ((path == null) ? "" : ("; path=" + path)) +  
  ((domain == null) ? "" : ("; domain=" + domain)) + 
  ((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {  
  var exp = new Date();  
  exp.setTime (exp.getTime() - 1);  
  var cval = GetCookie (name);  
  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

function setRemember() {
  var exp = new Date();
  exp.setTime(exp.getTime() + (365*24*60*60*1000));
  if (document.login_form.elements['remember_login'].checked == true) {
    SetCookie('rememberlogin','1',exp);
    SetCookie('username',document.login_form.elements['login_field'].value,exp);
    SetCookie('password',document.login_form.elements['password_field'].value,exp);
  }
  else {
    DeleteCookie('rememberlogin');
    DeleteCookie('username');
    DeleteCookie('password');
    document.login_form.elements['login_field'].value = "";
    document.login_form.elements['password_field'].value = "";
  }
}

function setRememberLogin() {
  var exp = new Date();
  exp.setTime(exp.getTime() + (365*24*60*60*1000));
  if (document.login_form.elements['remember_login'].checked == true) {
    SetCookie('rememberlogin','1',exp);
    SetCookie('username',document.login_form.elements['login_field'].value,exp);
    SetCookie('password',document.login_form.elements['password_field'].value,exp);
  }
  else {
    DeleteCookie('rememberlogin');
    DeleteCookie('username');
    DeleteCookie('password');
    document.login_form.elements['login_field'].value = "";
    document.login_form.elements['password_field'].value = "";
  }
}

var rememberlogin = null;
function doRememberLogin() {
  rememberlogin = GetCookie('rememberlogin');
  if ((!rememberlogin) || (rememberlogin == null)) {
    document.login_form.elements['remember_login'].defaultChecked = false;
    document.login_form.elements['remember_login'].checked = false;
    document.login_form.elements['remember_login'].value = false;
  }
  else {
    document.login_form.elements['remember_login'].defaultChecked = true;
    document.login_form.elements['remember_login'].checked = true;
    document.login_form.elements['remember_login'].value = true;
    var username = GetCookie('username');
    var password = GetCookie('password');
    if (username != null) {
      document.login_form.elements['login_field'].value = username;
    }
    if (password != null) {
      document.login_form.elements['password_field'].value = password;
    }
  }
}