function setExternalLinks() {
		    if (!document.getElementsByTagName) {
		        return null;
		    }
		    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.setAttribute("target", "blank");
		        }
		    }
		}
window.onload = setExternalLinks;