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";
 }
}

if (document.all && document.styleSheets && document.styleSheets[0] && document.styleSheets[0].addRule) {

	document.styleSheets[0].addRule('div#overlay img#tl', 'behavior: url(/css/iepngfix.htc)');
	document.styleSheets[0].addRule('div#overlay img#tr', 'behavior: url(/css/iepngfix.htc)');
	document.styleSheets[0].addRule('div#overlay img#bl', 'behavior: url(/css/iepngfix.htc)');
	document.styleSheets[0].addRule('div#overlay img#br', 'behavior: url(/css/iepngfix.htc)');
}