$(function(){

    var $el, leftPos, newWidth,
        $mainNav2 = $("#nav");
    
    /*
        EXAMPLE ONE
    $mainNav.append("<li id='magic-line'></li>");
    
    var $magicLine = $("#magic-line");
    
    $magicLine
        .width($(".current_page_item").width())
        .css("left", $(".current_page_item a").position().left)
        .data("origLeft", $magicLine.position().left)
        .data("origWidth", $magicLine.width());
        
    $("#example-one li").find("a").hover(function() {
        $el = $(this);
        leftPos = $el.position().left;
        newWidth = $el.parent().width();
        
        $magicLine.stop().animate({
            left: leftPos,
            width: newWidth
        });
    }, function() {
        $magicLine.stop().animate({
            left: $magicLine.data("origLeft"),
            width: $magicLine.data("origWidth")
        });    
    });
    /*
    
    /*
        EXAMPLE TWO
    */
    $mainNav2.append("<li id='magic-line'></li>");
    
    var $magicLineTwo = $("#magic-line");
    
    $magicLineTwo
        .width($(".current_page_item_two").width())
        .height($mainNav2.height())
        .css("left", $(".current_page_item_two a").position().left)
        .data("origLeft", $(".current_page_item_two a").position().left)
        .data("origWidth", $magicLineTwo.width())
        /*.data("origColor", $(".current_page_item_two a").attr("rel"));*/
                
    $("#nav li").find("a").hover(function() {
        $el = $(this);
        leftPos = $el.position().left;
        newWidth = $el.parent().width();
        $magicLineTwo.stop().animate({
            left: leftPos,
            width: newWidth,
            /*backgroundColor: $el.attr("rel")*/
        })
    }, function() {
        $magicLineTwo.stop().animate({
            left: $magicLineTwo.data("origLeft"),
            width: $magicLineTwo.data("origWidth"),
            /*backgroundColor: $magicLineTwo.data("origColor")*/
        });    
    });
});