//  Scripts to allow validating XHTML

// This one subs rel=external for parent=_blank

addLoadEvent(externalLinks);

function externalLinks() {
  if (!document.getElementsByTagName) return;
  var anchors = document.getElementsByTagName("a");
  for (var i=0; i<anchors.length; i++) {
    var anchor = anchors[i];
    if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external"){
      anchor.target = "_blank";
    }
    else if (anchor.getAttribute("href") &&  anchor.getAttribute("rel") == "parent"){
      anchor.target = "_parent";
    }
    else if (anchor.getAttribute("href") &&  anchor.getAttribute("rel") == "body"){
      anchor.target = "body";
    }
  }
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}