This is a super geeky answer, so if it doesn't make any sense to you, just ignore it. You can probably do what you want by making a user style sheet for familyecho.com for your browser, and use that to change the font size for the box contents. Maybe something like:
@-moz-document domain(familyecho.com) {
.dcelld { font-size:26px !important; }
}
I'm not at all sure that will work, because family echo doesn't use a style sheet for the boxes. The style is writen right into each TD tag. There's probaly a good reason for that. Anyway, this is just theoretical. I haven't actually tried this at Family Echo, but I have done something similar on other sites.