javascript for popup on selected item in dropdown

[shilu2]

I want to show popup on item selected in dropdown control. I tried popup script on this but doesn't works.
my code is as below

<select>
    <option value="1990">1990</option>
    <option value="1991">1991</option>
    <option value="1992">1992</option>
    <option value="1993">1993</option>
    <option value="1994">1994</option>                
</select>

now if I have select option i.e 1992 popup window should display the result 1992
please help me...
Thank you in adv.

[RoryGren]

Something like this?
<select onchange="alert(this.value)">

[shilu2]

Thank You very much.... It works........!!

[shilu2]

But Problem is that ......... I want some images and buttons on popup window so how can I insert it into popup...??