I'm looking for suggestions on how to implement the goal of:

Starting with .dwg in AutoCAD 2011 of a floor plan for trade show with over 1,000,000 sq. ft (translates to a very big svg) that ends up on a web page which can be interacted with by means of pan,zoom,click, etc.

Each booth on the floor plan is made up of 4 or 5 lines and text.

My initial attempt was to open in Illustrator, save as .svg and then manipulate with javascript. Each time a zoom in/out happens; each line for each booth needs to be re-drawn which is very inefficient.

Before I continue on, I'm hoping to get some ideas on how one might implement this. If at all possible, please point to references. I can manage most languages but am proficient in PHP on the server side and the usual client side suspects. I'm open to all ideas, so please chime in.

Thank you for taking the time to provide your input!