Formatting of Financial Calculation Tool in Html

I have developed a financial modelling tool in Ms Excel that I have converted to HTML using Spreadsheet converter. I need assistance in modifying the appearance of the tables that are displayed, as whilst the formulas are correctly converted, the layout needs some modification. Crucially, a graph is created from the data, and this needs considerable work, including the ability to overlay it onto other charts in html. I believe that the charts are create in R-Chart. I have more detailed information that i will provide to short-listed candidates this includes The MS Excel Files The Converted HTML Files Design Specifications. I expect the highest quality work and expect the work to be documented so that I understand what has been done. I will also provide a mini-project to help determine the successful candidate.