how to assigns integer values to dropdownlist using javascript

[deepak kumar sharma]

i have drag a dropdownlist box which is webserver control , i want to assign
it values like(0,1,2,3... uo tp 29) using javascript .....i need that when
page loads at cleint side , dropdownlist should be automatically populated
with values at client side using javascript only,,........can any one help
me.........plz