function setMediaLinkTargets() {
	var j, anchors;

	anchors = document.getElementsByTagName("a");

	for (j=0; j<anchors.length; j++) {
		if (anchors[j].href.match(".pdf$") == ".pdf" || anchors[j].href.match(".jpg$") == ".jpg")
			anchors[j].target = "_blank";
	}
}

setMediaLinkTargets();