If you install the ShortCode Exec PHP plugin the you can create this Shortcode which I called myjavascript
?><script type="text/javascript">
jQuery(document).ready(function() {
jQuery("div.fusion-logo a").attr("href","tel:303-985-9850");
});
</script>
You can now go to Appearance/Widgets and pick one of the footer widget areas and use a text widget to add the following shortcode
[myjavascript]
The selector may change depending upon what image your using and if it's retina ready but you can always figure it out by using developers tools.