function addExternalLinks() {
  if (!document.getElementsByTagName) return;  
  var anchors = $$(".event-description p a");
  addExternals(anchors);

  var externals = $$("a.external");
  addExternals(externals);
};

function addExternals(anchors) {
  anchors.each(function(a){
    if (a.getAttribute("href")) {
	  a.target = "_blank";
    }	
  })
};

window.onload = addExternalLinks;