how to make a "Tr" visiable and invisable based on radio buttonlist click
<p>i have an  <strong>2 "tr"</strong> under </p>

<ol>
<li>tr one  have  an  file upload  control</li>
<li><p>tr  two  have  an textbox  control.</p>

<p>so i have an  radio button list  woth three values 
1:image
2:video
3:Audio
by default i need  to  show  file  upload control  visiable that is  the  <strong>1"tr".</strong> but once user  clicks  on video/audio option  in radio button list  then i need to make <strong>2 "tr"</strong> visiable[ textbox] and <strong>1"tr"</strong> invisiable[fileupload control]
so how  can i  achive this  functionality in javascript</p>

<p>thank  you </p></li>
</ol>
