function externalLinks() {
if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i=0; i<anchors.length; i++) {
		var anchor = anchors[i];
	 	var isexternal = anchor.getAttribute("href").indexOf('http://www');
	 	var ispwb = anchor.getAttribute("href").indexOf('pwbank');
  	if (anchor.getAttribute("href") && isexternal > -1 && ispwb == -1) {
    	anchor.target = "_blank";
		}
 	}
}
window.onload = externalLinks;