$(document).ready(function() {
	var aDiv = document.createElement("div");
	aDiv.id = "subHolder";
	document.getElementById("content").appendChild(aDiv);

	$('#main ul a').click(function() {
		$('#main li').removeClass('selected');
		$(this).parent().addClass('selected');
		var url = $(this).attr('href');
		$("#subHolder").load(url + " #sub");
		return false;
	});
});