Cross origin requests are only supported for protocol schemes local file
Before using these commands be sure to end all running instances of Chrome.
On Windows:
chrome.exe --allow-file-access-from-files
chrome.exe --disabled-web-security
or:
File Access is prohibited from the start, in any browser javascript implementation. Someone can disable that "security feature" in his browser manually. For instance, for Google Chrome you have to startup the executable with --disabled-web-security as commandline argument. Firefox can disabled that within it's about:config.