function Display(id){
var a = document.getElementById(id);
switch(a.className){
	case 'NonDisplay':
		a.className='Display';
	break;
	case 'Display':
		a.className='NonDisplay';
	break;
	case 'NonDisplay yui-calcontainer single':
		a.className='Display yui-calcontainer single';
	break;
	case 'Display yui-calcontainer single':
		a.className='NonDisplay yui-calcontainer single';
	break;
}
}