404 error for Google +1 button in web pages

Hi I am new web development and php coding.I have 开发者_高级运维implemented the google +1 for my web site, but when I clicked on it, it is showing error message "404. That’s an error.The requested URL was not found on this server. That’s all we know". I am using the code that is provided in following http://www.google.com/webmasters/+1/button/

Did you really put whatever you wanted the +1-button for inside the tags? A 404 would suggest that you just left the tags as they appear in the example. If you were to supply some sample code of whatever is now working, people on this site could help you out a lot better.