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I need to customize the Joomla to support following idea: - I have many SVG files, each SVG has multiple layer (generated from inkscape tool, please search for this). - I want to manage those SVG similar to managing Articles: . Allow user to add new SVG (similar to new article) by selecting a svg from local computer. . SVG, similar to article, is assigned to specific Category (following all standard of Joomla). . At the frontend, user the SVG is displayed, by default, the first layer. . There is the button similar to "Next" to Turn On the subsequence layer in SVG format, or "Previous" button to Turn Off the current layer and display the previous layer. You can write your code from scratch, or integrate using any plugin or third party tool, just make it transparent to me and have clearly design. There is 2 phases of the project: - Phase 1: agreement on the technical design/solution. - Phase 2: customize the "proof of concept" version to have the acceptable graphical interface.