function externalLinks() {
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	var anchors = document.getElementsByTagName("a");
	var external = /http/i;
	var internal = /bildargumente\.de/i;
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		if (anchor.getAttribute("href") && external.test(anchor.getAttribute("href")) && !internal.test(anchor.getAttribute("href")) ){
			anchor.target = "_blank";
			anchor.className += "external";
		}
	}
}
window.onload = externalLinks;