$(function(){

    var $el, leftPos, newWidth,
        $mainNav = $("#menu"),
        $mainNav2 = $("#example-two");
    
    /*
        EXAMPLE ONE
    */

    var nav = location.pathname.substr(1).split('/').pop() || '/';
	if (nav.indexOf("html") == -1) {
	$('#menu-bar li:first-child').attr('class', 'current_page_item')
	}
	else if (nav) {
   		  $('#menu-bar a[href="' + nav + '"]').parent().attr('class', 'current_page_item')
	}

    $mainNav.append("<li id='magic-line'></li>");

    
	var $magicLine = $("#magic-line");
    
    $magicLine
        .width($(".current_page_item > a").width())
        .css("left", $(".current_page_item > a").position().left + ($(".current_page_item > a").innerWidth() - $(".current_page_item > a").width())/2 - ($(".current_page_item > a").width()%2 == 0 ? 0:1))
        .data("origLeft", $magicLine.position().left)
        .data("origWidth", $magicLine.width());
        
    $("#menu ul li").find("a").hover(function() {
        $el = $(this);
		var temp = $el.css("paddingLeft").split("px");
        leftPos = $el.position().left + parseInt(temp[0]);
        newWidth = $el.width();
        
        $magicLine.stop().animate({
            left: leftPos,
            width: newWidth
        });
    }, function() {
        $magicLine.stop().animate({
            left: $magicLine.data("origLeft"),
            width: $magicLine.data("origWidth")
        });    
    });
});