// open external link in new tab/window

// use rel="external" instead of target="_blank"

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";

    }

}

window.onload = externalLinks;

// hide and show

function viewinfo(id) {
	box = document.getElementById(id);
	box.className = "visible";

	//Now hide all other divs that are visible
	var oDivs = document.getElementsByTagName("div")

	for (var i=0; i<oDivs.length; i++)
		if (oDivs[i].className=="visible" && oDivs[i].id != id)
			oDivs[i].className = "hidden";
}