#father{
	z-index: 1;
	position: absolute;
	left: 50%;
	top: 50%;
	width: 990px;
	height: 540px;
	margin-left: -495px;
	margin-top: -270px;
	background-color: #000000;
	overflow: hidden;

}
#core{
	z-index: 2;
	position: absolute;
	top: 0px;
	overflow: hidden;
	visibility: visible;


}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/


div.cabecerasombra{
	z-index: 1;
	position:relative;
	margin-left: auto;
	margin-right: auto;
	width:828px;
}