function relTags() {

	if (document.getElementsByTagName) {
	
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		for (var loop = 0; loop < anchors.length; loop++) {
			
			var anchor = anchors[loop];
			if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") {
				anchor.target = "_blank";
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	}
}

window.onload = function() {

	relTags();

}