function secBoard1(n)
{
	for(i=0;i<secTablezs.cells.length;i++)
	secTablezs.cells[i].className="zs1";
	secTablezs.cells[n].className="zs2";
	for(i=0;i<mainTablezs.tBodies.length;i++)
	mainTablezs.tBodies[i].style.display="none";
	mainTablezs.tBodies[n].style.display="block";
}