function login_form(){

         $login= new form;

         echo "<table border=0 cellspacing=0 >";

         echo $login->begin_form($_SERVER['PHP_SELF'],"POST");

         echo "<tr><td>Email:</td><td>". $login->add_input("text","email")."</td></tr>";

         echo "<tr><td>Password:</td><td>". $login->add_input("password","passw")."</td></tr>";

         echo $login->add_submit("submit","submit");

         $login->end_form();

     }

class form  {
   function begin_form($action,$method){

      $tag_string = '<form action="'.$action.'" method="'.$method.'" >';
      return $tag_string;
    }


  function add_input($type,$name,$value=""){

      $tag_string = '<input type="'.$type.'" name="'.$name.'"  value="'.$value.'" />';
      return $tag_string;
  }

  function add_submit($name,$value="");
      $tag_string = '<input type="submit" name="'.$name.'"  value="'.$value.'" />';
      return $tag_string;

  }

  function end_form(){
     $tag_string = '</form>';
     return $tag_string;

  }

}