// MAGIC LINE

$(function(){


    var $el, leftPos, newWidth,
        $mainNav = $("#topnav ul")
    
    /*
        EXAMPLE ONE
    */
    $mainNav.append("<li id='magic-line'></li>");
    
    var $magicLine = $("#magic-line");
    
	try
	{
    $magicLine
        .width($(".current_page_item").width()+23)
        .css("left", $(".current_page_item").position().left)
        .data("origLeft", $magicLine.position().left)
        .data("origWidth", $magicLine.width());
	}
	catch(e)
	{
    $magicLine
        .width(0)
        .css("left", 0)
        .data("origLeft", $magicLine.position().left)
        .data("origWidth", $magicLine.width());
	}
        
    $("#topnav ul").find("li").hover(function() {
        $el = $(this);
        leftPos = $el.position().left;
        newWidth = $el.width();
        
        $magicLine.stop().animate({
            left: leftPos,
            width: newWidth
        });
    }, function() {
        $magicLine.stop().animate({
            left: $magicLine.data("origLeft"),
            width: $magicLine.data("origWidth")
        });    
    });
    
});