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

function setExternalLinks() 
{ 
				contentLinks=document.getElementById("content").getElementsByTagName("a");
				for (var i=0; i < contentLinks.length; i++){
	webaddress= contentLinks[i].getAttribute("href");
	addressUrl=webaddress.substring(0,26);
	if(addressUrl != 'http://www.retinadance.com') { contentLinks[i].setAttribute("class", "external");}
}
}

addLoadEvent(setExternalLinks);