Is there a way to use two CSS3 box shadows on one element?

I'm trying to replicate a button style in a Photoshop mock-up that has two shadows on it. The first shadow is an inner lighter box shadow (2px), and the second is a drop shadow outside the button (5px) itself.

In Photoshop this is easy - Inner Shadow and Drop Shadow. In CSS I can apparently have one or the other, but not both at the same time.

If you try the code below in a browser, you'll see that the box-shadow overrides the inset box-shadow.

Here's the inset box shadow:

box-shadow: inset 0 2px 0px #dcffa6;

And this is what I would like for the drop shadow on the button:

box-shadow: 0 2px 5px #000;

For context, here's my full button code (with gradients and all):

button {
    outline: none;
    position: relative;
	width: 160px;
    height: 40px;
	font-family: 'Open Sans', sans-serif;
	color: #fff;
	font-weight: 800;
	font-size: 12px;
	text-shadow: 0px 1px 3px black; 
	border-radius: 3px;
	background-color: #669900;
	background: -webkit-gradient(linear, left top, left bottom, from(#97cb52), to(#669900));
	background: -moz-linear-gradient(top, #97cb52, #669900);
	filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#97cb52', endColorstr='#669900');
	box-shadow: inset 0 2px 0px #dcffa6;
    box-shadow: 0 2px 5px #000;
	border: 1px solid #222;
	cursor: pointer;
}

You can comma-separate shadows:

box-shadow: inset 0 2px 0px #dcffa6, 0 2px 5px #000;

Box shadows can use commas to have multiple effects, just like with background images (in CSS3).