.contenedor  {
	position: relative;
	height: 794px;
	width: 1191px;
	left: 50%;
	top: 0px;
	margin-left: -596px;
}
.contenedor_1004_794_feb2010 {

	position: relative;
	height: 794px;
	width: 1004px;
	left: 50%;
	top: 0px;
	margin-left: -502px;
}
.contenedor_1131_1342_may2010 {
	position: relative;
	height: 1708px;
	width: 1131px;
	left: 50%;
	top: 0px;
	margin-left: -565px;
}