function menuImageSwap(e) {

    var target = (window.event) ? window.event.srcElement : e.target;

    if ( target.src.match('_red') ) {

        target.src = target.src.replace('_red','');

    } 
    else {

        target.src = target.src.replace('.png','_red.png');

    }

    return true;

}

function addResourcesListeners(e) {

  var listen = document.getElementById('workshops');
  addEvent(listen, 'mouseover', menuImageSwap, false);
  addEvent(listen, 'mouseout',  menuImageSwap, false);
  addEvent(listen, 'click',     menuImageSwap, false);

  listen = document.getElementById('evaluations');
  addEvent(listen, 'mouseover', menuImageSwap, false);
  addEvent(listen, 'mouseout',  menuImageSwap, false);
  addEvent(listen, 'click',     menuImageSwap, false);

  listen = document.getElementById('ito_podcasts');
  addEvent(listen, 'mouseover', menuImageSwap, false);
  addEvent(listen, 'mouseout',  menuImageSwap, false);
  addEvent(listen, 'click',     menuImageSwap, false);

  listen = document.getElementById('ito_newsletter');
  addEvent(listen, 'mouseover', menuImageSwap, false);
  addEvent(listen, 'mouseout',  menuImageSwap, false);
  addEvent(listen, 'click',     menuImageSwap, false);

  listen = document.getElementById('grants_and_funding');
  addEvent(listen, 'mouseover', menuImageSwap, false);
  addEvent(listen, 'mouseout',  menuImageSwap, false);
  addEvent(listen, 'click',     menuImageSwap, false);

}

addEvent(window, 'load', addResourcesListeners, false);