This won't work on the mainsite unless it's hosted there, so use the ugly code one at this link

What does this do?

This code allows your images to be temporarily enlarged when you hover your mouse over them.

To use this, place the following code into your page, and replace/edit the fields as necessary:

[[include :smlt:mrpines:image-block-hover name={$name}|caption={$caption}|width=300px|align=right]]