externalUrl = {

	srcClass : 'externalUrl',

	init : function() {

		var links = document.getElementsByTagName('A');

		for(var i = 0; i < links.length; i++) if (cls.has(links[i], externalUrl.srcClass)) links[i].setAttribute('target', '_blank');
	}
}

evt.add(window, 'load', externalUrl.init)