/**
 * @author alexander.farkas
 */
(function($){
    $.testMediaQuery = function(str){
        var date = new Date().getTime(), div = $('<div class="testMediaQuery' + date + '"></div>').css({
            visibility: 'hidden',
            position: 'absolute'
        }).appendTo('body'), style = document.createElement('style');
        style.setAttribute('type', 'text/css');
    	style.setAttribute('media', str);
        style = $(style).prependTo('head');
        styleS = document.styleSheets[0];
        if ((styleS.cssRules && !styleS.cssRules.length) || (styleS.rules && !styleS.rules.length)) {
            if (styleS.insertRule) {
                styleS.insertRule('.testMediaQuery' + date + ' {display:none !important;}', styleS.cssRules.length);
            }
            else 
                if (styleS.addRule) {
                    styleS.addRule('.testMediaQuery' + date, 'display:none');
                }
        }
        var ret = div.css('display') === 'none';
        div.remove();
        style.remove();
        return ret;
    };
    $.arrayInString = function(str, arr){
        var ret = -1;
        $.each(arr, function(i, item){
			if (str.indexOf(item) != -1) {
                ret = i;
                return false;
            }
        });
        return ret;
    };
    $.enableMediaQuery = (function(){
        var styles = [], styleLinks, date = new Date().getTime();
        function parseMedia(link){
            var medias = link.getAttribute('media'), 
			pMin = /\(\s*min-width\s*:\s*(\d+)px\s*\)/, 
			pMax = /\(\s*max-width\s*:\s*(\d+)px\s*\)/, 
			resMin, 
			resMax, 
			supportedMedia = ['handheld', 'all', 'screen', 'projection', 'tty', 'tv', 'print'], 
			curMedia, 
            mediaString = [];
            medias = (!medias) ? ['all'] : medias.split(',');
            for (var i = 0, len = medias.length; i < len; i++) {
				curMedia = $.arrayInString(medias[i], supportedMedia);
                if (curMedia != -1) {
                    curMedia = supportedMedia[curMedia];
                    if (!resMin) {
                        resMin = pMin.exec(medias[i]);
                        if (resMin) {
                            resMin = parseInt(resMin[1], 10);
                        }
                    }
                    if (!resMax) {
                        resMax = pMax.exec(medias[i]);
                        if (resMax) {
                            resMax = parseInt(resMax[1], 10);
                        }
                    }
                    mediaString.push(curMedia);
                }
            }
			
            styles.push({
                obj: link,
                min: resMin,
                max: resMax,
				medium: mediaString.join(',')
            });
        }
        return {
            init: function(){
                if (!styleLinks) {
                    styleLinks = $('link[rel*=style]').each(function(){
                        parseMedia(this);
                    });
                    $.enableMediaQuery.adjust();
                    $(window).bind('resize.mediaQueries', $.enableMediaQuery.adjust);
                }
            },
            adjust: function(){
                var width = $(window).width();
                $('link.insertStyleforMedia' + date).remove();
				
                for (var i = 0, len = styles.length; i < len; i++) {
                    if (!styles[i].obj.disabled && ((!(styles[i].min && styles[i].min > width) && !(styles[i].max && styles[i].max < width)) || (!styles[i].max && !styles[i].min))) {
                        var n = styles[i].obj.cloneNode(true);
                        n.setAttribute('media', styles[i].medium);
                        n.className = 'insertStyleforMedia' + date;
                        document.getElementsByTagName("head")[0].appendChild(n);
                    }
                }
            }
        };
    })();
    
    if (($.browser.msie && parseFloat($.browser.version, 10) < 8) || ($.browser.mozilla && parseFloat($.browser.version, 10) < 1.91)) {
        try {
            $.enableMediaQuery.init();
        } 
        catch (e) {
        
        }
    }
    $(function(){
		if ($.testMediaQuery('all') && !$.testMediaQuery('only all')) {
            $.enableMediaQuery.init();
        }
    });
})(jQuery);