How to set img width/height inside div of same id

How to set img width/height inside div of same id

Below is the code from my jsp:


<div id="photolib_notfirst">

<img src="/wps/wcm/myconnect/4931f17e-41de-4e09-9639-609c12f7a1d1/Ammonia+Training+class+003+resized.JPG?MOD=AJPERES&amp;CACHEID=4931f17e-41de-4e09-9639-609c12f7a1d1" border="0" width="200" height="200"  />


</div>

<div id="photolib_notfirst">



</div>


<div id="photolib_notfirst">

<img src="/wps/wcm/myconnect/4931f17e-41de-4e09-9639-609c12f7a1d1/Ammonia+Training+class+003+resized.JPG?MOD=AJPERES&amp;CACHEID=4931f17e-41de-4e09-9639-609c12f7a1d1" border="0" width="200" height="200"  />


</div>

like many div and single img elements will be there , the number of divs will vary dynamically

Now the requirement is i will have to set all the width and height of the images

Please help
Thanks in advance