/*--------------------------------------------------------------------------*/

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";
 }
}

/*--------------------------------------------------------------------------*/

document.observe('dom:loaded', function () {
	// cache background images in ie6 to prevent multiple http requests
	if (Prototype.Browser.IE6) {
		try {
			document.execCommand('BackgroundImageCache', false, true);
		} catch (e) {}
	}

	externalLinks();
});