jQuery(document).ready(function($) {
	// add rounded corners to navigation
	$('#mainNavigation a').append('<span class="mn-corner-tl mn-corners"></span><span class="mn-corner-bl mn-corners"></span><span class="mn-corner-tr mn-corners"></span><span class="mn-corner-br mn-corners"></span>');
	
	// external links open in new window
	$('a[rel~="external"]').attr("target","_blank");
});