Style checkboxes as Toggle Buttons

Question

On my website, users can post articles and tag them accordingly using some pre-set tags. These tags are in the form of checkboxes. Example below:

Answer 1

You may try to have pictures with javascript onclick event that would change img source attribute. Then, put hidden control with given id and in the same onclick event use document.getElementById('hiddencontrol').value = 1 - document.getElementById('hiddencontrol').value (with 0 or 1 as default).

However, I don't know how to make it without Javascript.