border-radius custom corners

[paulirish]

first is a border-radius model for custom corners.
so you can do the top two corners rounded and bottom two square (like for tabs)

the way i expect it to work is you toggle between simple (existing) and custom mode.
so that way we dont need to change the UI except for adding a toggle link (that'll hide this one and show the other)
the other just has the corners available one by one.

and thus we can kill border-radius.com.. muHAHAHah

[paulirish]

eric meyer pointed out the FF can handle -moz-border-radius: 10px 35px 33px 18px;

so it doesnt need to expand as much as most people do it