function testFont(name) {
        name = name.replace(/['"<>]/g,'');

        var body  = document.body,
            test  = document.createElement('div'),
            installed = false,
            template =
                '<b style="display:inline !important; width:auto !important; font:normal 10px/1 \'X\',sans-serif !important">ii</b>'+
                '<b style="display:inline !important; width:auto !important; font:normal 10px/1 \'X\',monospace !important">ii</b>';

        if (name) {
            test.innerHTML = template.replace(/X/g, name);

            test.style.cssText = 'position: absolute; visibility: hidden; display: block !important';

            body.insertBefore(test, body.firstChild);

            ab = test.getElementsByTagName('b');

            installed = ab[0].offsetWidth === ab[1].offsetWidth;

            body.removeChild(test);
        }

        return installed;
    }