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";
	}
}

function init() {
	externalLinks();
}
window.onload = init;

function bgrCache() {
	try {
	  document.execCommand('BackgroundImageCache', false, true);
	} catch(e) {}
}
if (window.attachEvent) window.attachEvent("onload", bgrCache);