<

SCRIPT 

type

=text/javascript

>

var

 c

=

0

var

 t

function

 qq()

{

document.getElementById('txt').options.add(

new

   Option(c,   c));   

c

=

c

+

1

;

t

=

setTimeout(

"

qq()

"

,

1000

);

}

function

 tt()

{

clearTimeout(t)

}

</

SCRIPT

>

<

FORM

>

<

SELECT 

name

=txt

></

SELECT

>

<

INPUT 

onclick

=qq() 

type

=button 

value

=Start

>

<

INPUT 

onclick

=tt() 

type

=button 

value

=Stop!

>

</

FORM

>