function go_external(){
	var full_url = window.location.href;
	var ext_url = full_url.split("=");	
	//alert(ext_url[1]);
	//window.opener.location = ext_url[1];
	window.open(ext_url[1],'_blank'); 
	window.close();
}
function close_leaving_popup(){
	window.close();
}
function changeImages() {

	if (document.images) {

		for (var i=0; i<changeImages.arguments.length; i+=2) {

			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];

		}

	}

}