I am looking at adding a font-resizer to your template, when the breadcrumbs are are shown (breadcrumb on left , font resizer to the right on the same row.) I do not want to add a widget or place it on a page. I am willing to modify the functions.php code and then call it from the header.php (if this is possible to do in the child theme please let me know I would prefer to do it there). I have found code for creating a widget or plugin that uses jQuery but there does not seem to be straight php code to do this. Is it best to do something like this in php or is jQuery better?