I got a support request yesterday for Menus that Toggle. I thought I'd make an example and post it here.
By default, psd2css Online generates menus that automatically close themselves after 4 seconds. But of course you are free to modify the code generated by psd2css Online to suite your needs exactly. This user wanted menus that stay open and toggle open and closes when you click on the menu item. Here is an example and explanation of how to do that.
menu1 has the new functionality, and menu2 works the old way. I put them both in so you can compare how they work:
http://psd2cssonline.com/tutorials/menuclickclose/index.html
Feel free to read the code in that page and download the PSD file there used to make it.