Help with CSS image Gallery

Question

Found this simple css image gallery. However I'm having trouble adjusting it do my needs. I ideally want to make each small image slightly bigger than currently and have 3 or 4 on each line. Also want to make the enlarged image bigger. The width would need to be around 550px.
<style type="text/css">
* This notice MUST stay intact for legal use.
* This script was created for FREE CSS Menus.
* Visit: www.freecssmenus.co.uk for more CSS.
* Also visit our Free online menu creator.
/* credits: www.freecssmenus.co.uk */
#pg { width:390px;
height:200px;
border:2px dotted #666;
padding:5px;
padding-top:15px;
#pg ul { list-style:none;
  padding:0;
  margin:0;
  width:180px;
  position:relative;
  float:left;
#pg ul li { display:inline;
  width:52px;
  height:52px;
  float:left;
  margin:0 0 8px 8px;
#pg ul li a { display:block;
  width:50px;
  height:50px;
  text-decoration:none;
  border:1px solid #000;
#pg ul li a img { display:block;
  width:50px;
  height:50px;
  border:0;
#pg ul li a:hover { white-space:normal;
  border-color:#336600;
background-color:#AABB33;
#pg ul li a:hover img { position:absolute;
  left:190px;
top:0;
  width:auto;
  height:110px;
  border:1px solid #000;
#pg ul li a span {display:none}
#pg ul li a:hover span { display:block;
position:absolute;
  left:5px;
  top:130px;
  width:350px;
  height:auto;
font-size:12px;
color:#999999;
</style>
html
<div id="pg">
  <ul>
  <li>
<a href="css_rollover_uk_map.php">
<img src="upimage/ukmap345.jpg" alt="Css Rollover Map" />
<span>
<strong>
CSS Map.</strong>
CSS Image swap on rollover/hover. This simple display of CSS shows the versatility of Cascading Style Sheets. Remember this animation is 100% User Accessible.</span>
</a>
</li>
  <li>
<a href="big_css_button.php">
<img src="upimage/bigbutton1390.jpg" alt="Large Css Button" />
<span>
<strong>
CSS Big Button.</strong>
Css buttons can be as large and as extravagant as you like. Using one image you can create simple css buttons like this. This button is still a hyperlink not just an image.</span>
</a>
</li>
  <li>
<a href="menu_opacity.php">
<img src="upimage/003opacity639.jpg" alt="Css Opacity" />
<span>
<strong>
CSS Opacity Menu.</strong>
  you can use styles to change the opacity of an image. This creates interesting effects when creating a menu. </span>
</a>
</li>
  <li>
<a href="#">
<img src="upimage/freemusic885.jpg" alt="Free Mp3 Downloads: Unborn Records" />
<span>
<strong>
Unborn Records </strong>
Download free mp3 music for your ipod or mp3 player. Download free music from unsigned artists</span>
</a>
</li>
  <li>
<a href="#">
<img src="upimage/trix363.jpg" alt="Visit Trix the dog at www.catandtwodogs.co.u" />
<span>
<strong>
Cat And Two Dogs </strong>
Visit my three pets at www.catandtwodogs.co.uk . This is a picture of trix, he's a border collie.</span>
</a>
</li>
  <li>
<a href="#">
<img src="upimage/colours238.jpg" alt="A picture of colours in a swirl" />
<span>
<strong>
A swirl of colours. </strong>
This is just a picture of colours in a swirl effect.</span>
</a>
</li>
  </ul>
</div>

Answer 1

Sorry can't do this at the moment.
I've decided to switch to the JQuery Lightbox Image Gallery instead. In IE8 I get the following message:
Message: Script error
Line: 0
Char: 0
Code: 0
URI: file:///C:/Documents%20and%20Settings/User/My%20Documents/SRC12-13/all%20html%205/all%20ht ml%205/Simple-HTML-5-Template/Simple%20HTML%205%20Template/js/jquery.lightbox-0.5.min.js
My page works and my js is refenced correctly. Not sure if this is just a IE8 thing, or whether the page needs uploading to work correctly. Works fine in Chrome.
Wonder if there is a way to fix this?