function  secBoard(n)
{
for(i=0;i<secTable.cells.length;i++)
secTable.cells[i].className="sec1";
secTable.cells[n].className="sec2";
for(i=0;i<mainTable.tBodies.length;i++)
mainTable.tBodies[i].style.display="none";
mainTable.tBodies[n].style.display="block";
}
function  secBoard1(n)
{
for(i=0;i<secTable1.cells.length;i++)
secTable1.cells[i].className="sec1";
secTable1.cells[n].className="sec2";
for(i=0;i<mainTable1.tBodies.length;i++)
mainTable1.tBodies[i].style.display="none";
mainTable1.tBodies[n].style.display="block";
}