Row Expand Collapse using JQuery and Ajax

body {
	font: normal 11px auto "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif;
	color: #4f6b72;
	background: #E6EAE9;
}

#mytable {
	width: 700px;
	padding: 0;
	margin: 0;
}

caption {
	padding: 0 0 5px 0;
	width: 700px;	 
	font: italic 11px "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif;
	text-align: right;
}

th {
	font: bold 11px "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif;
	color: #4f6b72;
	border-right: 1px solid #C1DAD7;
	border-bottom: 1px solid #C1DAD7;
	border-top: 1px solid #C1DAD7;
	letter-spacing: 2px;
	text-transform: uppercase;
	text-align: left;
	padding: 6px 6px 6px 12px;
	background: #CAE8EA url(images/bg_header.jpg) no-repeat;
}


td {
	border-right: 1px solid #C1DAD7;
	border-bottom: 1px solid #C1DAD7;
	background: #fff;
	padding: 6px 6px 6px 12px;
	color: #4f6b72;
}


td.alt {
	background: #F5FAFA;
	color: #797268;
}

tr td:hover
{background: -moz-linear-gradient(center top, transparent, transparent 49%, rgba(2,37,58,0.5) 50%, rgba(63,111,135,0.5));
                    background: -webkit-gradient(linear, center top, center bottom, from(transparent), to(rgba(63,111,135,0.5)));
	}