Hey! You may have seen some of my posts regarding the ability to sort posts by their residence in two distinct categories. It doesn't appear to be feasible; however, tags are perfect.
http://www.blog.com/?tag=tag_a+tag_b does exactly what I want.
Now the question is, can someone help me make a drop down menu that will function similarly to the category dropdown widget? I actually need to make two menus. One that onchange submits the first tag to a variable and the second that onchange submits the url/?tag=menu1var+menu2.