addEvent(window, "load", zoekNaarExterneLinks);

function zoekNaarExterneLinks()
{
	var as = document.getElementsByTagName("a");
	for(var i = 0; i < as.length; ++i)
	{
		if(as[i].className.indexOf("extern") >= 0)
		{
			as[i].setAttribute("target", "_blank");
		}
	}
}