function externalLinks() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	var forms = document.getElementsByTagName("form");
	for (var i=0; i<anchors.length; i++) {
		var anchor = anchors[i];
		if (anchor.getAttribute("rel") != null) 
		{
			if (anchor.getAttribute("href") && anchor.getAttribute("rel").indexOf("externaltop") != -1)
			{
				anchor.target = "_top";
			}
			else if (anchor.getAttribute("href") && anchor.getAttribute("rel").indexOf("external") != -1)
			{
				anchor.target = "_blank";
			}
		}
	}
	for (var i=0; i<forms.length; i++) {
		var form = forms[i];
		if (form.getAttribute("rel") != null) 
		{
			if (form.getAttribute("action") && form.getAttribute("rel").indexOf("externaltop") != -1)
			{
				anchor.target = "_top";
			}
			if (form.getAttribute("action") && form.getAttribute("rel").indexOf("external") != -1)
			{
				form.target = "_blank";
			}
		}
	}
}
window.onload = externalLinks;