function newColor(idCell) {
eval('document.all.'+idCell+'.style.background = "#CD1C1C"');
eval('document.getElementById("' + idCell + '").style.background = "#CD1C1C"');
}

function backColor(idCell) {
eval('document.all.'+idCell+'.style.background = "#000000"');
eval('document.getElementById("' + idCell + '").style.background = "#000000"');
}