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';
	}
}

/*
function externalLinks_old(){
	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("class") == "external"){
			anchor.onclick = function(event){return newWindow(this, event);}
			anchor.onkeypress = function(event){return newWindow(this, event);}
		}
	}
}

function newWindow(anchor, event){
	var keyCode;
	if(event && event.type == 'keypress'){
		if(event.keyCode) keyCode = event.keyCode;
		else if(event.which) keyCode = event.which;
		// 13 == Return key. 32 == space key
		if(keyCode != 13 && keyCode != 32) return true;
	}
	return !window.open(anchor);
}

Event.observe(window,'load', externalLinks, false);
*/