Highcharts 自適應屏幕大小

 最近做項目發現Highcharts無法自適應屏幕大小，看了API發現圖表高度是固定的，於是只能調整圖表的寬高度

$(function () {
    $(window).resize(function () {
        var windowHeight = 0;
        var widowWidth = 0;
        if (typeof (window.innerHeight) == 'number') {
            windowHeight = window.innerHeight;
            widowWidth = window.innerWidth;
        }
        else {
            if (document.documentElement && document.documentElement.clientHeight) {
                windowHeight = document.documentElement.clientHeight;
                widowWidth = document.documentElement.clientWidth;
            }
            else {
                if (document.body && document.body.clientHeight) {
                    windowHeight = document.body.clientHeight;
                    widowWidth = document.body.clientWidth;
                }
            }
        }

        var width_div = widowWidth / 2 - 20;
        var height_div = windowHeight / 2 - 35;
        $('#u99_img').css("height", height_div);
        $('#u99_img').css("width", width_div);
        $('#u100_img').css("height", height_div);
        $('#u100_img').css("width", width_div);
    });
});