browser class through JS

gistfile1.txt

 //add browser classes to body
    var browser = [];
    if (/mozilla/.test(navigator.userAgent.toLowerCase()) && !/webkit    /.test(navigator.userAgent.toLowerCase()))
        browser.push('mozila');
    if (/webkit/.test(navigator.userAgent.toLowerCase()))
        browser.push('webkit');
    if (/opera/.test(navigator.userAgent.toLowerCase()))
        browser.push('opera');
    if (/safari/.test(navigator.userAgent.toLowerCase()))
        browser.push('safari');
    
    console.log(browser.join(' '));