#area {
	background: #ccc;
	height: 20px;
	width: 500px;
}

#knob {
	height: 20px;
	width: 20px;
	background: #000;
}

#area2 {
	position: relative;
	height: 15px;
	width: 280px;
	background: #000;
}

#knob2 {
	position: absolute;
	height: 15px;
	width: 20px;
	background: #ff3300;
	cursor: pointer;
}

#area3 {
	background: #ccc;
	height: 300px;
	width: 20px;
}

#knob3 {
	height: 20px;
	width: 20px;
	background: #000;
}