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 secBoard2(n) 
{ 
for(i=0;i<secTable2.cells.length;i++) 
secTable2.cells[i].className="sec4"; 
secTable2.cells[n].className="sec3"; 
for(i=0;i<mainTable2.tBodies.length;i++) 
mainTable2.tBodies[i].style.display="none"; 
mainTable2.tBodies[n].style.display="block"; 
}

function secBoard3(n) 
{ 
for(i=0;i<secTable3.cells.length;i++) 
secTable3.cells[i].className="sec5"; 
secTable3.cells[n].className="sec6"; 
for(i=0;i<mainTable3.tBodies.length;i++) 
mainTable3.tBodies[i].style.display="none"; 
mainTable3.tBodies[n].style.display="block"; 
}

function secBoard6(n) 
{ 
for(i=0;i<secTable6.cells.length;i++) 
secTable6.cells[i].className="sec7"; 
secTable6.cells[n].className="sec8"; 
for(i=0;i<mainTable6.tBodies.length;i++) 
mainTable6.tBodies[i].style.display="none"; 
mainTable6.tBodies[n].style.display="block"; 
} 


function secBoard7(n) 
{ 
for(i=0;i<secTable7.cells.length;i++) 
secTable7.cells[i].className="sec10"; 
secTable7.cells[n].className="sec9"; 
for(i=0;i<mainTable7.tBodies.length;i++) 
mainTable7.tBodies[i].style.display="none"; 
mainTable7.tBodies[n].style.display="block"; 
}

function secBoard8(n) 
{ 
for(i=0;i<secTable8.cells.length;i++) 
secTable8.cells[i].className="sec12"; 
secTable8.cells[n].className="sec11"; 
for(i=0;i<mainTable8.tBodies.length;i++) 
mainTable8.tBodies[i].style.display="none"; 
mainTable8.tBodies[n].style.display="block"; 
}

function secBoard9(n) 
{ 
for(i=0;i<secTable9.cells.length;i++) 
secTable9.cells[i].className="sec14"; 
secTable9.cells[n].className="sec13"; 
for(i=0;i<mainTable9.tBodies.length;i++) 
mainTable9.tBodies[i].style.display="none"; 
mainTable9.tBodies[n].style.display="block"; 
}

function secBoard10(n) 
{ 
for(i=0;i<secTable10.cells.length;i++) 
secTable10.cells[i].className="sec15"; 
secTable10.cells[n].className="sec16"; 
for(i=0;i<mainTable10.tBodies.length;i++) 
mainTable10.tBodies[i].style.display="none"; 
mainTable10.tBodies[n].style.display="block"; 
}

function secBoard11(n) 
{ 
for(i=0;i<secTable11.cells.length;i++) 
secTable11.cells[i].className="sec18"; 
secTable11.cells[n].className="sec17"; 
for(i=0;i<mainTable11.tBodies.length;i++) 
mainTable11.tBodies[i].style.display="none"; 
mainTable11.tBodies[n].style.display="block"; 
}

function secBoard12(n) 
{ 
for(i=0;i<secTable12.cells.length;i++) 
secTable12.cells[i].className="sec19"; 
secTable12.cells[n].className="sec20"; 
for(i=0;i<mainTable12.tBodies.length;i++) 
mainTable12.tBodies[i].style.display="none"; 
mainTable12.tBodies[n].style.display="block"; 
}