function login()
{
    var frm = document.forms[0];
    if (frm.password.value != '' && frm.username.value != '') 
    {
        document.forms[0].submit();    
    }
    else
    {
       if (frm.username.value != '' ) 
        {
            frm.password.focus();
        }
        else
        {
            frm.username.focus();  
        }
    }

   
}