You just got another regular visitor for your site. It's amazing and all the functions are working (both time interval and theme color works perfectly). I would like to suggest if you could put some functions to choose the time period of the graph, like for 30 days or even longer if possible. Other than that, it's even better that other available similar websites.
Thank you! I'm very pleased to hear that you like it!
About the graph; Currently I'm saving the prices from btc-e every 15 minutes to my own host with a maximum of 24 hours. I can expand this to 30 days, but I dont know how this will affect loading times etc.
I need to test this first, what means this will take at least 30 days
So I think I will add a 7 day graph first and see what this will do.