// a rel="external"
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';
	}
}

// Multiple onload functionality
$(document).ready(function(){
	externalLinks();
});