function concat_collection(obj1, obj2) {
	var i;
	var arr = new Array();
	var len1 = obj1.length;
	var len2 = obj2.length;
	for (i=0; i<len1; i++) {
		arr.push(obj1[i]);
	}
	for (i=0; i<len2; i++) {
		arr.push(obj2[i]);
	}
	return arr;
}
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    };
  }
}
function externalLinks() { // track external Links
        if (!document.getElementsByTagName) return;
	var atags = document.getElementsByTagName("a");
	var areas = document.getElementsByTagName("area");
	var anchors = concat_collection(atags, areas);
	var myExternal = document.createElement('img');
	myExternal.addClass = 'extLink';
	myExternal.src = '/shared/css/external.png';
	for (var i=0; i<anchors.length; i++) {
		var anchor = anchors[i];
		if( (anchor.rel == "externalLink") || (anchor.getAttribute("class") == "externalLink") ) {
			anchor.appendChild(myExternal);
			anchor.onclick = function(){
				if (this.href.match(/^http\:/i)) {
					var awr = "/cgi-bin/awredir.pl?url=";
					window.location = awr + this.href;
					return false;
				}
			}
		}
	}
} addLoadEvent(externalLinks);