.zgshell {
	padding: 7px 15px;
	border: 1px solid #aaa;
	background: #888;
	background: -webkit-linear-gradient(top, #888, #666);
	background:    -moz-linear-gradient(top, #888, #666);
	background: 	-ms-linear-gradient(top, #888, #666);
	background:      -o-linear-gradient(top, #888, #666);
	background:         linear-gradient(top, #888, #666);
	margin: 0;
	-webkit-border-radius: 5px;
	 -khtml-border-radius: 5px;
	   -moz-border-radius: 5px;
	    -ie-border-radius: 5px;
	     -o-border-radius: 5px;
	        border-radius: 5px;
	color:#fff;
	text-align: center;
	text-shadow: 0 -1px 0 #555;
	font-weight: bold;
  	font-size:13px;
	cursor: pointer;
	outline: none;
	text-decoration: none;
}
.zgshell:hover {
	background: #777;
	background: -webkit-linear-gradient(top, #888, #777);
	background:    -moz-linear-gradient(top, #888, #777);
	background:     -ms-linear-gradient(top, #888, #777);
	background:      -o-linear-gradient(top, #888, #777);
	background:         linear-gradient(top, #888, #777);
}
.zgshell:active {
	background: #666;
	background: -webkit-linear-gradient(top, #666, #888);
	background:    -moz-linear-gradient(top, #666, #888);
	background:     -ms-linear-gradient(top, #666, #888);
	background:      -o-linear-gradient(top, #666, #888);
	background:         linear-gradient(top, #666, #888);
}