function ShowTab(sNameLayer, sTabLayers, iIndex, sTotalLayers)
{
    var aTabLayers = sTabLayers;
	var sFicha = sNameLayer+aTabLayers;

    for(i=1;i<=sTotalLayers;i++)
    {
		document.getElementById(sNameLayer+i).style.display = "none";
    }
    document.getElementById(sFicha).style.display = "block";
}