Copyright law says something along the lines that a piece of work has to be original and not reproduce elements as well as the look and feel or someone else's work.
I'm not sure what the specifics are and I could be confusing this with trademarks. You'll have to ask a lawyer the details and then ask someone who is good with computer law to find out what applies on the web.
I'm not sure what the specifics are and I could be confusing this with trademarks. You'll have to ask a lawyer the details and then ask someone who is good with computer law to find out what applies on the web.