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";
	}
}