
Make It Disappear
<style type="text/css">
.defaultpic { display: none; }
</style>

Borders
To put a border around your defaultpic (changes on hover):
<style type="text/css">
a:link .defaultpic, a:visited .defaultpic { border: 2px solid red; }
a:hover .defaultpic { border: 2px dotted green; }
</style>
[ More Border Styles ]

Image Filters
To apply a filter (changes on hover):
<style type="text/css">
a:link .defaultpic, a:visited .defaultpic { filter: fliph; }
a:hover .defaultpic { filter: flipv; }
</style>
Nb filters only work in the IE browser, except for
[ Opacity ] which is cross
browser.
[ More IE Filters ]

Size
To resize your defaultpic with code, just give it a width and/or height:
<style type="text/css">
.defaultpic {
width: 100px;
height: 100px;
}
</style>
[ More Info ]

Positioning
To move your defaultpic a little way left or right, you can use margins like this:
<style type="text/css">
.defaultpic { margin-left: 150px; }
</style>
You could use top or bottom margins to move it up or down too!
<style type="text/css">
.defaultpic { margin-top: 100px; }
</style>
If you want to float your thumbnails up beside the defaultpic, see
[ this bit ].