function show_linkedin_popup(url, title, summary, image) {
	var href = "http://www.linkedin.com/shareArticle?mini=true";
	href = href+"&url="+url+"&title="+title+"&summary="+summary; 
	if (image) {
		href = href+"&image="+image;
	}
	
	var newWin = window.open(
		href,
		title,
		"width=600,height=400,resizable=no,scrollbars=no,status=yes"
	);
	
	newWin.focus();
}