#izquierda {
	position: absolute;
	height: 847px;
	width: 14px;
	left: 100px;
	top: 14px;
	background-image: url(imgsweb/izq.gif);
	background-repeat: repeat-y;
}
#derecha {
	background-image: url(imgsweb/derecha.gif);
	background-repeat: repeat-y;
	position: absolute;
	height: 847px;
	width: 14px;
	left: 846px;
	top: 14px;
}