回複：You can try Reverse Proxy if you use Apache server

I am not sure if that works. The browser should be able to detect the documents are for 2 different domains even thought they are "local". All browsers disable the function: the document in one domain can't be changed under
another different domain for "security" reasons. However,
this "security" assumption is not reasonable. There are many ways to bypass this. I know one way, but it is not that nice and clean. We can also use VB to simulate the keywords to pass data cross the different domains.