Я должен всегда использовать операторы AndAlso и OrElse?

console.log(bowser);
document.write("You are using " + bowser.name +
               " v" + bowser.version + 
               " on " + bowser.osname);

console.log(platform);
document.write("You are using " + platform.name +
               " v" + platform.version + 
               " on " + platform.os);

var result = detect.parse(navigator.userAgent);
console.log(result);
document.write("You are using " + result.browser.family +
               " v" + result.browser.version + 
               " on " + result.os.family);

console.log($.browser)
document.write("You are using " + $.browser.name +
               " v" + $.browser.versionNumber + 
               " on " + $.browser.platform);