Well there some ways to do it.
CSS3 allows something like this:
- Code: Select all
.additional-images .floatleft {position: relative; }
.additional-images a[title]:hover:after {
content: attr(title);
padding: 0;
text-indent: -999em;
position: absolute;
width: 30px;
height: 30px;
left: 0;
top: 0;
z-index: 20px;
background: transparent url('../images/yourimage.png') no-repeat;
}
In this case, your image should be located on template images directory and have 30x30px size.
I didn't tested very well... but try it.
Cheers