title: Toggle Anchor Tag Background on Click
body: <p>In a div I have an anchor tag. That anchor tag has a background image assigned to it using CSS. </p>
  
  <p>When the user clicks on it, some JavaScript is executed, but I want to change the background image to another, then when they click on it again, the background image changes back to what it was originally. </p>
  
  <p>Any help on how to do this (JQuery, CSS; I'm unsure) would be much appreciated. </p>
  
  <p>Thanks in advance. </p>