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") == "blank") {
			anchor.target = "_blank";
		}
	}
}

function alertIE6(){
	message = "You are using Internet Explorer 6. I don't support IE6 any longer and neither does Microsoft. Please upgrade your browser for your security and websites rendering compatibility.";
	alert(message);
}

window.onload = externalLinks;