Non-latin characters in surnames breaks sidebar indi/fam-list

[fisharebest]

The individuals and families sidebar use the surname for several purposes.

As a CSS id:

<li id="sb_indi_'.$surname.'">

This generates invalid HTML when surnames contain non-latin characters, puncuation marks, etc. We need a unique identifier containing valid characters. md5($surname) would be ideal, but JavaScript does not have an md5() function.

As an HTML attribute:

<a href="'.$surname.'" title="'.$surname.'" alt="'.$alpha.'" class="sb_indi_surname">

This generates invalid HTML when the surname contains special characters. It needs to be escaped with htmlspecialchars(), but this will break the JavaScript - unless the JS implements an unhtmlentities() function.

To generate a URL:

url: "sidebar.php?sb_action=individuals&alpha="+alpha+"&surname="+surname

This generates invalid URLs when surnames contain special characters. The arguments need to be escaped with either JavaScript's escape() function or PHP's rawurlencode() function.