Double underline, with css Options

[femmefutile]

Im a newbie to css and stuff and I was wondering what i should put to this code to make it write a double underline when i use the underline tags.

This is the stylesheet:

CODE

u {
font-family: arial;
font-size: 8pt;
color: 304973;
}

Thanks.

[*mipadi*]

It's probably possible, but just not easy. I'm relatively certain you could come up with some weird hack for it, but there isn't a simple attribute to do it.