/* Slide Subnav Menu v1.1.1
 * by Justin Volpato http://www.justjquery.com/
 */
(function($){
    $.slidenav = function(options){
    
        var defaults = {
            animspeed: 'medium',
            hideonout: 'true'
        };
        
        var options = $.extend(defaults, options);
        
        
        $('.slidenav > ul > li:not(:has(ul))').append('<ul></ul>');
        
        $(".subnav").append($(".slidenav ul li ul"));
        $('.slidenav-box').addClass('inactive-box');
        
        
        function hideonout(){
            if (options.hideonout == 'true') {
                $('.slidenav-box').addClass('inactive-box');
            }
        }
        ($(".slidenav-container")) ? $(".slidenav-container").hoverIntent(function(){
        }, hideonout) : false;
        
        
        var subwidth = [];
        $(".slidenav ul li").each(function(aIndex){
            var bw = parseInt($('.slidenav-box').css("border-left-width")) + parseInt($('.slidenav-box').css("border-right-width"));
            var bp = parseInt($('.slidenav-box').css('padding-left')) + parseInt($('.slidenav-box').css('padding-right'));
            var minwidth = bw + bp;
            
            subwidth.push($('.subnav ul:eq(' + aIndex + ')').width());
            
            function changeWidth(){
                $('.slidenav-box').removeClass('inactive-box');
                $('.subnav ul').hide();
                $('.subnav ul:eq(' + aIndex + ')').show(1);
                if (subwidth[aIndex] == 0) {
                    $('.slidenav-box').addClass('inactive-box');
                }
                else 
                    $(".slidenav-box").animate({
                        marginLeft: offsetvalue[aIndex],
                        width: subwidth[aIndex]
                    }, options.animspeed)
            }
            
            $(this).hoverIntent(changeWidth, function(){
            });
            
            
            var navitemwidth = [];
            var navculm = 0;
            var navculmwidth = [];
            var navitemcentre = [];
            var offsetvalue = [];
            for (i = 0; i < aIndex + 1; i++) {
                navitemwidth.push($('.slidenav li:eq(' + i + ')').width());
                navculm = navculm + navitemwidth[i];
                navculmwidth.push(navculm);
                navitemcentre.push(navculmwidth[i] - (navitemwidth[i] * 0.5));
                offsetvalue.push(navitemcentre[i] - (subwidth[i] * 0.5));
            }
            
            if (navitemcentre[aIndex] < (subwidth[aIndex] * 0.5)) {
                offsetvalue[aIndex] = 0;
            }
            else 
                if ((offsetvalue[aIndex] + subwidth[aIndex]) > $(".slidenav").width()) {
                    offsetvalue[aIndex] = $(".slidenav").width() - subwidth[aIndex] - minwidth;
                }
        });
    }
})(jQuery);