//Grab the href, open it in a window and cancel the click action
$("a[href^='http']").click(function(){window.open(this.href); return false;});
//Add target = blant to the external link
$("a[href^='http']").attr('target','_blank');
//Similar to the first, only using your domain name
$("a:not([href*='yourdomainnamehere.com'])").click(function(){
		window.open(this.href);
		return false;
	}).attr("title", "Opens in a new window");