I slaved away for a few hours and created nice buttons that work purely using CSS,and they are cross-browser compatible. That means that they do not use images at all,and they should format nicely in almost any browser.

Check them out and see if there are any you like:
List of Buttons

Button 1

Preview:

Code:

<input type="submit" class="styled-button-1" value="Download" />
<style type="text/css"> 
.styled-button-1 {
	-webkit-box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
	-moz-box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
	box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
	color:#333;
	background-color:#FA2;
	border-radius:5px;
	-moz-border-radius:5px;
	-webkit-border-radius:5px;
	border:none;
	font-family:'Helvetica Neue',Arial,sans-serif;
	font-size:16px;
	font-weight:700;
	height:32px;
	padding:4px 16px;
	text-shadow:#FE6 0 1px 0
}
</style>

Button 2

Preview:

Code:

<input type="submit" class="styled-button-2" value="Download" /> 
<style type="text/css">
.styled-button-2 {
	-webkit-box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
	-moz-box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
	box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
	border-bottom-color:#333;
	border:1px solid #61c4ea;
	background-color:#7cceee;
	border-radius:5px;
	-moz-border-radius:5px;
	-webkit-border-radius:5px;
	color:#333;
	font-family:'Verdana',Arial,sans-serif;
	font-size:14px;
	text-shadow:#b2e2f5 0 1px 0;
	padding:5px
}
</style>

Button 3

Preview:

Code:

<input type="submit" class="styled-button-3" value="Download" /> 
<style type="text/css">
.styled-button-3 {
	-webkit-box-shadow:rgba(0,0,0,0.0.1) 0 1px 0 0;
	-moz-box-shadow:rgba(0,0,0,0.0.1) 0 1px 0 0;
	box-shadow:rgba(0,0,0,0.0.1) 0 1px 0 0;
	background-color:#5B74A8;
	border:1px solid #29447E;
	font-family:'Lucida Grande',Tahoma,Verdana,Arial,sans-serif;
	font-size:12px;
	font-weight:700;
	padding:2px 6px;
	height:28px;
	color:#fff;
	border-radius:5px;
	-moz-border-radius:5px;
	-webkit-border-radius:5px
}
</style>

Button 4

Preview:

Code:

<input type="submit" class="styled-button-4" value="Download" /> 
<style type="text/css">
.styled-button-4 {
	-webkit-box-shadow:rgba(0,0,0,0.98) 0 1px 0 0;
	-moz-box-shadow:rgba(0,0,0,0.98) 0 1px 0 0;
	box-shadow:rgba(0,0,0,0.98) 0 1px 0 0;
	background-color:#EEE;
	border-radius:0;
	-webkit-border-radius:0;
	-moz-border-radius:0;
	border:1px solid #999;
	color:#666;
	font-family:'Lucida Grande',Tahoma,Verdana,Arial,Sans-serif;
	font-size:11px;
	font-weight:700;
	padding:2px 6px;
	height:28px
}
</style>

Button 5

Preview:

Code:

<input type="submit" class="styled-button-5" value="Download" /> 
<style type="text/css">
.styled-button-5 {
	background-color:#ed8223;
	color:#fff;
	font-family:'Helvetica Neue',sans-serif;
	font-size:18px;
	line-height:30px;
	border-radius:20px;
	-webkit-border-radius:20px;
	-moz-border-radius:20px;
	border:0;
	text-shadow:#C17C3A 0 -1px 0;
	width:120px;
	height:32px
}
</style>

Button 6

Preview:

Code:

<input type="submit" class="styled-button-6" value="Download" /> 
<style type="text/css">
.styled-button-6 {
	background:#f78096;
	background:-moz-linear-gradient(top,#f78096 0%,#f56778 100%);
	background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#f78096),color-stop(100%,#f56778));
	background:-webkit-linear-gradient(top,#f78096 0%,#f56778 100%);
	background:-o-linear-gradient(top,#f78096 0%,#f56778 100%);
	background:-ms-linear-gradient(top,#f78096 0%,#f56778 100%);
	background:linear-gradient(top,#f78096 0%,#f56778 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#f78096',endColorstr='#f78096',GradientType=0);
	padding:5px 4px;
	color:#fff;
	font-family:'Helvetica Neue',sans-serif;
	font-size:12px;
	border-radius:4px;
	-moz-border-radius:4px;
	-webkit-border-radius:4px;
	border:1px solid #ae4553
}
</style>

Button 7

Preview:

Code:

<input type="submit" class="styled-button-7" value="Download" /> 
<style type="text/css">
.styled-button-7 {
	background:#FF5DB1;
	background:-moz-linear-gradient(top,#FF5DB1 0%,#E94A86 100%);
	background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#FF5DB1),color-stop(100%,#E94A86));
	background:-webkit-linear-gradient(top,#FF5DB1 0%,#E94A86 100%);
	background:-o-linear-gradient(top,#FF5DB1 0%,#E94A86 100%);
	background:-ms-linear-gradient(top,#FF5DB1 0%,#E94A86 100%);
	background:linear-gradient(top,#FF5DB1 0%,#E94A86 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#FF5DB1',endColorstr='#E94A86',GradientType=0);
	padding:5px 7px;
	color:#fff;
	font-family:'Helvetica Neue',sans-serif;
	font-size:12px;
	border-radius:4px;
	-moz-border-radius:4px;
	-webkit-border-radius:4px;
	border:1px solid #E8124F
}
</style>

Button 8

Preview:

Code:

<input type="submit" class="styled-button-8" value="Download" />
<style type="text/css">
.styled-button-8 {
	background:#25A6E1;
	background:-moz-linear-gradient(top,#25A6E1 0%,#188BC0 100%);
	background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#25A6E1),color-stop(100%,#188BC0));
	background:-webkit-linear-gradient(top,#25A6E1 0%,#188BC0 100%);
	background:-o-linear-gradient(top,#25A6E1 0%,#188BC0 100%);
	background:-ms-linear-gradient(top,#25A6E1 0%,#188BC0 100%);
	background:linear-gradient(top,#25A6E1 0%,#188BC0 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#25A6E1',endColorstr='#188BC0',GradientType=0);
	padding:8px 13px;
	color:#fff;
	font-family:'Helvetica Neue',sans-serif;
	font-size:17px;
	border-radius:4px;
	-moz-border-radius:4px;
	-webkit-border-radius:4px;
	border:1px solid #1A87B9
}
</style>

Button 9

Preview:

Code:

<input type="submit" class="styled-button-9" value="Download" />
<style type="text/css">
.styled-button-9 {
	background:#00A0D1;
	background:-moz-linear-gradient(top,#00A0D1 0%,#008DB8 100%);
	background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#00A0D1),color-stop(100%,#008DB8));
	background:-webkit-linear-gradient(top,#00A0D1 0%,#008DB8 100%);
	background:-o-linear-gradient(top,#00A0D1 0%,#008DB8 100%);
	background:-ms-linear-gradient(top,#00A0D1 0%,#008DB8 100%);
	background:linear-gradient(top,#00A0D1 0%,#008DB8 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#00A0D1',endColorstr='#008DB8',GradientType=0);
	padding:8px 20px;
	color:#cfebf3;
	font-family:'Helvetica Neue',sans-serif;
	font-size:13px;
	border-radius:40px;
	-moz-border-radius:40px;
	-webkit-border-radius:40px;
	border:1px solid #095B7E
}
</style>

Button 10

Preview:

Code:

<input type="submit" class="styled-button-10" value="Download" />
<style type="text/css">
.styled-button-10 {
	background:#5CCD00;
	background:-moz-linear-gradient(top,#5CCD00 0%,#4AA400 100%);
	background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#5CCD00),color-stop(100%,#4AA400));
	background:-webkit-linear-gradient(top,#5CCD00 0%,#4AA400 100%);
	background:-o-linear-gradient(top,#5CCD00 0%,#4AA400 100%);
	background:-ms-linear-gradient(top,#5CCD00 0%,#4AA400 100%);
	background:linear-gradient(top,#5CCD00 0%,#4AA400 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#5CCD00',endColorstr='#4AA400',GradientType=0);
	padding:10px 15px;
	color:#fff;
	font-family:'Helvetica Neue',sans-serif;
	font-size:16px;
	border-radius:5px;
	-moz-border-radius:5px;
	-webkit-border-radius:5px;
	border:1px solid #459A00
}
</style>

Button 11

Preview:

Code:

<input type="submit" class="styled-button-11" value="Download" /> 
<style type="text/css">
.styled-button-11 {
	background:#FEDA71;
	background:-moz-linear-gradient(top,#FEDA71 0%,#FEBB49 100%);
	background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#FEDA71),color-stop(100%,#FEBB49));
	background:-webkit-linear-gradient(top,#FEDA71 0%,#FEBB49 100%);
	background:-o-linear-gradient(top,#FEDA71 0%,#FEBB49 100%);
	background:-ms-linear-gradient(top,#FEDA71 0%,#FEBB49 100%);
	background:linear-gradient(top,#FEDA71 0%,#FEBB49 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#FEDA71',endColorstr='#FEBB49',GradientType=0);
	padding:8px 18px;
	color:#623F1D;
	font-family:'Helvetica Neue',sans-serif;
	font-size:16px;
	border-radius:48px;
	-moz-border-radius:48px;
	-webkit-border-radius:48px;
	border:1px solid #623F1D
}
</style>

Button 12

Preview:

Code:

<input type="submit" class="styled-button-12" value="Download" /> 
<style type="text/css">
.styled-button-12 {
	background:#5B74A8;
	background:-moz-linear-gradient(top,#5B74A8 0%,#5B74A8 100%);
	background:-webkit-gradient(linear,left top,left bottom,color-stop(0%,#5B74A8),color-stop(100%,#5B74A8));
	background:-webkit-linear-gradient(top,#5B74A8 0%,#5B74A8 100%);
	background:-o-linear-gradient(top,#5B74A8 0%,#5B74A8 100%);
	background:-ms-linear-gradient(top,#5B74A8 0%,#5B74A8 100%);
	background:linear-gradient(top,#5B74A8 0%,#5B74A8 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#5B74A8',endColorstr='#5B74A8',GradientType=0);
	padding:2px 6px;
	color:#fff;
	font-family:'Helvetica',sans-serif;
	font-size:11px;
	border-radius:0;
	-moz-border-radius:0;
	-webkit-border-radius:0;
	border:1px solid #1A356E
}
</style>