Faded gradient borders

dabblet.css

/* Faded gradient borders */
/* Inspired by: http://dribbble.com/shots/707099-UI-Nav-Work */

.nav {
	background-color: #179eca;
	background-image: -webkit-linear-gradient(top, rgb(23, 158, 202), rgb(24, 136, 190));
	background-image: -moz-linear-gradient(top, rgb(23, 158, 202), rgb(24, 136, 190));
	background-image: linear-gradient(top, rgb(23, 158, 202), rgb(24, 136, 190));
	font-family: sans-serif;
	font-size: 14px;
	margin: 0;
	padding: 0;
}

.nav li {
	display: inline-block;
}

.nav a {
	color: #105e80;
	display: block;
	font-weight: bold;
	height: 48px;
	line-height: 48px;
	padding: 0 20px;
	position: relative;
	text-decoration: none;
	text-shadow: 0 1px 0 rgba(255,255,255,0.4);
}

.nav a.on,
.nav a:hover {
	color: #fff;
	text-shadow: 0 -1px 0 rgba(0,0,0,0.5);
}

/* Add the gradient border divider */

.nav a:after {
	background-image: -webkit-linear-gradient(top, rgba(0,93,131,.5) 50%, rgba(0,93,131,.22) 100%);
	background-image: -moz-linear-gradient(top, rgba(0,93,131,.5) 50%, rgba(0,93,131,.22) 100%);
  	box-shadow: 1px 0 0 0 rgba(255,255,255,.1);
	content: "";
  	display: block;
  	height: 48px;
  	position: absolute; /* position the divider to the right edge */
  	right: -1px;
	top: 0;
  	width: 1px;
  	z-index: 1;
}

dabblet.html

<ul class="nav">
	<li><a href="#">Oreo Cookies</a></li>
	<li><a class="on" href="#">Gummi Bears</a></li>
	<li><a href="#">Fruit Snacks</a></li>
</ul>

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"all"}

Hi Derek,

Would you happen to know if :before can be used to create a fade out edge for a css gradient?
I am currently using this:
background: -webkit-gradient(linear, left top, left bottom, from(#f9f9f9), to(#ffffff));

But need to fade out both edges (top right and top left).

Your advise will be appreciated,
Noman