// Position Subnavi under active main nav link
$(document).ready(function() {
    var item = $("#navigation ul li.current_page_item a");
		if (item.position() != null) {
	    var left_margin = item.position().left + (item.width()/2) + 20 - $("#subnavigation ul").position().left;
	    if ($("#subnavigation ul li").length > 0) {
	        $("#subnavigation ul").attr("style", "margin-left: " + left_margin +"px;");
	    } else {
	        $("#subnavigation ul").hide();
	    }
		} else {
			$("#subnavigation ul").hide();
		}
});