friendica/view/theme/cleanzero/theme.php

<?php
/*
 * Name: cleanzero
 * Description: Theme with clean design derived from the zero theme family. Including options to set color schemes, font sizes and resizing of images in posts 
 * Version:
 * Author: Christian Vogeley (https://christian-vogeley.de/profile/christian)
 */
$a->theme_info = array(
  'extends' => 'duepuntozero',
);
function cleanzero_init(&$a) {
$a->page['htmlhead'] .= <<< EOT
<script>

function insertFormatting(comment,BBcode,id) {
	
		var tmpStr = $("#comment-edit-text-" + id).val();
		if(tmpStr == comment) {
			tmpStr = "";
			$("#comment-edit-text-" + id).addClass("comment-edit-text-full");
			$("#comment-edit-text-" + id).removeClass("comment-edit-text-empty");
			openMenu("comment-edit-submit-wrapper-" + id);
			$("#comment-edit-text-" + id).val(tmpStr);
		}

	textarea = document.getElementById("comment-edit-text-" +id);
	if (document.selection) {
		textarea.focus();
		selected = document.selection.createRange();
		if (BBcode == "url"){
			selected.text = "["+BBcode+"]" + "http://" +  selected.text + "[/"+BBcode+"]";
			} else			
		selected.text = "["+BBcode+"]" + selected.text + "[/"+BBcode+"]";
	} else if (textarea.selectionStart || textarea.selectionStart == "0") {
		var start = textarea.selectionStart;
		var end = textarea.selectionEnd;
		if (BBcode == "url"){
			textarea.value = textarea.value.substring(0, start) + "["+BBcode+"]" + "http://" + textarea.value.substring(start, end) + "[/"+BBcode+"]" + textarea.value.substring(end, textarea.value.length);
			} else
		textarea.value = textarea.value.substring(0, start) + "["+BBcode+"]" + textarea.value.substring(start, end) + "[/"+BBcode+"]" + textarea.value.substring(end, textarea.value.length);
	}
	return true;
}

function cmtBbOpen(id) {
	$(".comment-edit-bb-" + id).show();
}
function cmtBbClose(comment, id) {
	$(".comment-edit-bb-" + id).hide();
}

$(document).ready(function() {

$('.group-edit-icon').hover(
	function() {
		$(this).addClass('icon'); $(this).removeClass('iconspacer');},
	function() {
		$(this).removeClass('icon'); $(this).addClass('iconspacer');}
	);

$('.sidebar-group-element').hover(
	function() {
		id = $(this).attr('id');
		$('#edit-' + id).addClass('icon'); $('#edit-' + id).removeClass('iconspacer');},

	function() {
		id = $(this).attr('id');
		$('#edit-' + id).removeClass('icon');$('#edit-' + id).addClass('iconspacer');}
	);


$('.savedsearchdrop').hover(
	function() {
		$(this).addClass('drop'); $(this).addClass('icon'); $(this).removeClass('iconspacer');},
	function() {
		$(this).removeClass('drop'); $(this).removeClass('icon'); $(this).addClass('iconspacer');}
	);

$('.savedsearchterm').hover(
	function() {
		id = $(this).attr('id');
		$('#drop-' + id).addClass('icon'); 	$('#drop-' + id).addClass('drophide'); $('#drop-' + id).removeClass('iconspacer');},

	function() {
		id = $(this).attr('id');
		$('#drop-' + id).removeClass('icon');$('#drop-' + id).removeClass('drophide'); $('#drop-' + id).addClass('iconspacer');}
	);

});


</script>
EOT;
// get resize configuration

$resize=false;
$site_resize = get_config('cleanzero', 'resize' );
if(local_user()) $resize = get_pconfig(local_user(), 'cleanzero', 'resize' );

if ($resize===false) $resize=$site_resize;
if ($resize===false) $resize=0;

if (intval($resize) > 0) {
//load jquery.ae.image.resize.js
$imageresizeJS = $a->get_baseurl($ssl_state)."/view/theme/cleanzero/js/jquery.ae.image.resize.js";
$a->page['htmlhead'] .= sprintf('<script language="JavaScript" src="%s" ></script>', $imageresizeJS);
$a->page['htmlhead'] .= '
<script>

 $(function() {
	$(".wall-item-content-wrapper  img").aeImageResize({height: '.$resize.', width: '.$resize.'});
  });
</script>';}
}