Hello,
We have worked on all the specifications mentioned in the job description, and hence we have expertise of this concept.
Also, we do not encounter any complexities in the job description/ concept as well.
We have very good expertise in X)HMTL, CSS, DOM, XML, XPath and XSLT who has 4+years of experience.
We do have very good experience in JavaScript,MVC, widgets, modular as well.
Unfortunately, I am unable to attach the sample documents in Freelancer website and I am not sure whether all the providers are facing the same issue. If you can share your EMAIL id then I can share our samples for your perusal. Just to assure on our capabilities, please visit at our Freelancer Feedbacks section in http://www.freelancer.com/users/feedback_1461331.html
Looking forward to hear from you soon
Best Regards