function ChangeCell(cell)
{
    cell.bgColor = '#cccccc';
	cell.style.borderColor='#999999';
}
function RevertCell(cell)
{
    cell.bgColor = '#f1f1f1';
	cell.style.borderColor='#f1f1f1';
}
function ClickCell(cell)
{
    cell.bgColor = '#999999';
}

function showGuestFirst() {
    document.all.spanFirst.style.display = 'inline'
	document.all.spanEnter.style.display = 'none'
	document.all.spanView.style.display = 'none'
 }
function showGuestEnter() {
    document.all.spanFirst.style.display = 'none'
	document.all.spanEnter.style.display = 'inline'
	document.all.spanView.style.display = 'none'
 }
function showGuestView() {
    document.all.spanFirst.style.display = 'none'
	document.all.spanEnter.style.display = 'none'
	document.all.spanView.style.display = 'inline'
 }