jquery to add hover elements to every item on the page

jQuery :: Add Visual Element Selector for Frontend

$(document).ready(function() {
$('head').append('<style type="text/css">.outline-element {outline: 1px solid #c00;}.outline-element-clicked {outline: 1px solid #0c0;}</style>');
  $('body').bind('mouseover mouseout click', function(event) {
    var $tgt = $(event.target);
    if (!$tgt.closest('.syntax_hilite').length) {
      $tgt.toggleClass(event.type == 'click' ? 'outline-element-clicked' : 'outline-element');
      $('body').removeClass('outline-element-clicked')
    }
  });
});