// Plugin created by Brock Nusser - http://mlamenu.blogspot.com/

$(function() {
    var collapse = new Boolean();
    //setup - all values in pixels
    var navWidth = 209;
    var ulIndent = 0;
    collapse = true;
    //end setup

    $('#nav').css('width', navWidth + 'px');
    $('#nav ul').css('width', navWidth + 'px');
    $('#nav ul').css('margin-left', ulIndent + 'px');


    $('#nav a').each(function() {
        var level = $(this).parents('ul').length;
        var liWidth = navWidth - (ulIndent * level);
        $(this).parent('li').css('width', liWidth + 'px');
    });

    //Required Section
    var slideSpeed = 'normal'; // 'slow', 'normal', 'fast', or miliseconds 
    $('#nav a').each(function() {
        var thisHref = $(this).attr('href')
        if ((window.location.pathname.indexOf(thisHref) == 0) || (window.location.pathname.indexOf('/' + thisHref) == 0)) {
            $(this).addClass('Current');
        }
    });

    $('.Current').parent('li').children('ul').show();
    $('.Current').parents('ul').show();

    $('#nav a').click(function() {
        // MEL: Markieren des aktuellen Menüpunktes
        $('#nav a').each(function() {
            $(this).removeClass('selected');
            $(this).removeClass('selectedParent');
        })
        $(this).addClass('selected');
        // MEL: Wenn Menüpunkt ein Punkt der 3. Ebene ist, soll auch der dazugehören Punkt der 2. Ebene markiert sein
        //alert($(this).parent('li').parent('ul').parent('li').children('a').length);

        if ($(this).parent('li').parent('ul').parent('li').children('a').length > 0) {
            $(this).parent('li').parent('ul').parent('li').children('a').addClass('selectedParent');
        }

        /*if ($(this).parent('li').children('ul').html() != null) {
            if (collapse) {
                $(this).parent('li').parent('ul').children('li').children('ul').slideUp(slideSpeed);
            }
            if ($(this).parent('li').children('ul').css('display') == "block") {
                $(this).parent('li').children('ul').slideUp(slideSpeed);
            } else {
                $(this).parent('li').children('ul').slideDown(slideSpeed);
            }
            return false;
        }*/

    });

    $('#nav li').click(function() {
        if ($(this).children('a').length == 0) {
            if ($(this).children('ul').html() != null) {
                $(this).parent('ul').children('li').children('ul').slideUp(slideSpeed);
                if ($(this).children('ul').css('display') == "block") {
                    $(this).children('ul').slideUp(slideSpeed);
                } else {
                    $(this).children('ul').slideDown(slideSpeed);
                }
            }
        }
    });
    //End Required Section

    //Optional Section - Show Carrots
    var imgOffClosed = ""; //"url(images/imgOffClosed.gif) no-repeat 5px ";
    var imgOnClosed = ""; //"url(images/imgOnClosed.gif) no-repeat 5px ";
    var imgOnOpen = ""; //"url(images/imgOnOpen.gif) no-repeat 5px ";
    var charBeforeLB = 23; //characters before line break - you must calculate this - based on font-size and LI width;
    var paddingBig = 0; //push carrot arrow down (in pixels) when no there is a line break in the LI
    var paddingSmall = 0;  //push carrot arrow down (in pixels) when no there is no line break in the LI
    var maxLIHeight = 50; // max height of LI when list is closed

    $('#nav > li').each(function() {

        var childText = $(this).children('a').text();
        var topPadding = paddingBig;
        if (childText.length < charBeforeLB) { topPadding = paddingSmall; }
        if ($(this).height() < maxLIHeight) {//list is closed

            if ($(this).children('a').attr('class') == "Current") {
                //$(this).css('background', imgOnClosed + topPadding + "px");
            } else {
                //$(this).css('background', imgOffClosed + topPadding + "px");
            }

            if ($(this).children('a').attr('class') != "Current") {
                $(this).hover(function() {
                    if ($(this).height() < maxLIHeight) {
                        //$(this).css('background', imgOnClosed + topPadding + "px"); 
                    }
                },
                function() {
                    if ($(this).height() < maxLIHeight) {
                        //$(this).css('background', imgOffClosed + topPadding + "px"); 
                    }
                });
            }
        }
        else {// list is open
            //$(this).css('background', imgOnOpen + topPadding + "px");
        }

        $(this).children('a').click(function() {
            $('#nav > li').each(function() {
                var childText = $(this).children('a').text();
                var topPadding = paddingBig;
                if (childText.length < charBeforeLB) { topPadding = paddingSmall; }
                if ($(this).children('a').attr('class') == 'Current') {
                    //$(this).css('background', imgOnClosed + topPadding + "px");
                } else {
                    //$(this).css('background', imgOffClosed + topPadding + "px");
                }
            });
            var liHeight = $(this).parent('li').height();
            if ($(this).parent('li').children('ul').length > 0) {
                if (liHeight < maxLIHeight) {
                    //$(this).parent('li').css('background', imgOnOpen + topPadding + "px");
                } else {
                    //$(this).parent('li').css('background', imgOnClosed + topPadding + "px"); 
                }
            }

        });
    });
    //End Optional Section
});