Build a Website with HTML5 - Scrolling parralex website

Hello, One of my clients needs a homepage designed with a scrolling animation, The animation concept is modification of the reference site below: [login to view URL] From the link above, it takes the concept of a path created along with scrolling and intersecting with key objects to display a certain animation + text. But, unlike a straight pathway shown in the link above, our concept requires a curving and zigzag pathway which should be designed such that, upon scrolling, it appears as if the screen is shifting along the path being drawn as you scroll down. So basically the movement is not just top-down but also some sideways movement. The entire project is a single page with a ONE PAGE design containing the animation described above and other simple parts in this order: i) Image slider as top of the page with a Menu with links ii) Animation concept described above iii) About page iv) Contact page v) Footer The site must be mobile responsive and the project must also include a back end where all parts of the homepage can be controlled and edited when needed. A completely detailed explanation of the animation concept, along with diagrams will be provided to you upon taking up the project. We can even explain in detail over a skype call. But the above should give you a general idea of what we need. Kindly note the timeline for the project is 15 days. Before you apply , please go through the requirements listed above THOROUGHLY. Kindly apply ONLY if you have experience working on such animation projects before. If you think you are up to this task and can do it, kindly apply for the project and send us the following info: i) What technology do you intend to implement to make this project. ii) What is your proposed timeline along with breakdown in milestones iii) What is your proposed price quote for the same iv) Reference link of similar animation concepts you have already worked on (NEEDED).