function xover(cell)
{cell.style.backgroundColor='#313d60'; cell.style.cursor='pointer';}
function out(cell)
{cell.style.backgroundColor='#7d7d78';}

function xover_b(cell)
{cell.style.backgroundColor='#ffffff'; cell.style.cursor='pointer';}
function out_b(cell)
{cell.style.backgroundColor='#e0e0da';}