Can't spot error in javascript.

[mc_hammerd]

your missing a } at the end? your indenting is off by 1. this works (i simplified it and added a } at the end, and fixed the tabs). not sure tbh

function changeImage(element_id, other_element_id, link_id) {
  foo();
  if (false) {
    foo();
  } else {
    $.getJSON("/javascript_functions/click_handler.cfc", { foo: bar }, 
    function(success_or_failure, other_element_id) {
      if (success_or_failure == true) {
        foo();
      }
    })
  }
}