function openExternalLink(){
	var currentDate = new Date();
	window.open(this.href, 'externalSite_'+currentDate.getTime());
	return false;
}

function initExternalLinks(){
	var anchors = document.getElementsByTagName('a');
	var num_anchors = anchors.length;
	var anchor;
	for(var i=0;i<num_anchors;i++){
			anchor = anchors[i];
			if(anchor.get('href').indexOf('http://') > -1){
				anchor.addEvent('click', openExternalLink.bind(anchor));
				anchor.addEvent('click',
					function(){
						return false;
					}
				);
			}
	}
}

window.addEvent('domready',
	function(){
		initExternalLinks();
	}
);