var DHTML = (document.getElementById || document.all || document.layers);
function getObj(name) { // credits to quirksmode.org
  if (document.getElementById) {
  	this.obj = document.getElementById(name);
	this.style = document.getElementById(name).style;
  } else if (document.all) {
	this.obj = document.all[name];
	this.style = document.all[name].style;
  } else if (document.layers) {
   	this.obj = document.layers[name];
   	this.style = document.layers[name];
  }
}


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";
 }
}
addLoadEvent(externalLinks);

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