function despace(testVal)
{
  return testVal.replace(/ +/g,'');
}

function val_order(subform)
{  
    if ( !despace(subform.txtName.value) ) { alert ("You must enter your name."); return false; }
    if ( !despace(subform.txtEmail.value) ) { alert ("You must enter an e-mail address."); return false; }
    else if ( !subform.txtEmail.value.match(/\w+@\w+.\w{2,}/) ) { alert ("You must enter a valid e-mail address."); return false; }
    // All tests passed.
    return true;
}