如何使用jQuery淡化一个 并淡化另一个 ？

I am building my portfolio and I want to create a gallery to display my projects. I have a selection of seven divs containing content that form a tabbed navigation-esque section of my website. As with other tabbed navigations, only one div containing content will be active at any one time. However, unlike other tabbed navigations, this one is controlled by PHP. If certain content (currently set to a file_exists function but will soon be MySQL controlled) is available, the div will be written into the navigation and the appropriate link will be displayed. If it is not, then the link will be hidden and the div will not be written. The files required are based on a $_GET call, and the files required vary depending on the string inside my $_GET variable.I am building my portfolio and I want to create