body { 
	margin: 0;
}

.pixel {
	position: absolute;
	height: 13px;
	width: 25px;
	line-height: 0px;
}

.one_by_one_pixel {
	position: absolute;
	height: 5px;
	width: 5px;
	line-height: 0px;
}

.one_by_two_pixel {
	position: absolute;
	height: 13px;
	width: 50px;
	line-height: 0px;
}

.two_by_two_pixel {
	position: absolute;
	height: 26px;
	width: 50px;
	line-height: 0px;
}

* html .one_by_one_pixel {
	position: absolute;
	height: 5px;
	width: 5px;
	line-height: 0px;
}

* html .one_by_two_pixel {
	position: absolute;
	height: 13px;
	width: 50px;
	line-height: 0px;
}

* html .two_by_two_pixel {
	position: absolute;
	height: 24px;
	width: 50px;
	line-height: 0px;
}

.ad {
	height: 100%;
	width: 100%;
}