function doInvestorLogin(frmObj) {
  if(frmObj) {
    if(frmObj.txtUserName.value.length <= 0) {
     alert('Please enter Username.');
     frmObj.txtUserName.focus();
     return false;
    } else if(frmObj.txtPassword.value.length <= 0) {
     alert('Please enter Password.');
     frmObj.txtPassword.focus();
     return false;
    }

    var pars = '&action=check_login' + '&username=' + escape(frmObj.txtUserName.value) + '&password=' + escape(frmObj.txtPassword.value);
    var url = 'investor_room.process.php?' + pars;
    var xmlHttp = GetXmlHttpObject();
    xmlHttp.onreadystatechange = function stateChanged() {
      if (xmlHttp.readyState == 4) {
        if (xmlHttp.status == 200) { //alert(xmlHttp.responseText)
          if (xmlHttp.responseText == '1') {
            frmObj.submit();
          } else {
            alert('Invalid username or password!');
          }
        }
      }
    };
    xmlHttp.open('GET',url,true);
    xmlHttp.send(null);
  }
}