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"; 
} 

function secBoard2(n) 
{ 
for(i=0;i<secTable2.cells.length;i++) 
secTable2.cells[i].className="st2"; 
secTable2.cells[n].className="st1";
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="sec1"; 
secTable3.cells[n].className="sec2"; 
for(i=0;i<mainTable3.tBodies.length;i++) 
mainTable3.tBodies[i].style.display="none"; 
mainTable3.tBodies[n].style.display="block"; 
}

function secBoard4(n) 
{ 
for(i=0;i<secTable4.cells.length;i++) 
secTable4.cells[i].className="v2"; 
secTable4.cells[n].className="v1"; 
for(i=0;i<mainTable4.tBodies.length;i++) 
mainTable4.tBodies[i].style.display="none"; 
mainTable4.tBodies[n].style.display="block"; 
}

function secBoard5(n) 
{ 
for(i=0;i<secTable5.cells.length;i++) 
secTable5.cells[i].className="sec1"; 
secTable5.cells[n].className="sec2"; 
for(i=0;i<mainTable5.tBodies.length;i++) 
mainTable5.tBodies[i].style.display="none"; 
mainTable5.tBodies[n].style.display="block"; 
}

function secBoard6(n) 
{ 
for(i=0;i<secTable6.cells.length;i++) 
secTable6.cells[i].className="sec1"; 
secTable6.cells[n].className="sec2"; 
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<mainTable7.tBodies.length;i++) 
mainTable7.tBodies[i].style.display="none"; 
mainTable7.tBodies[n].style.display="block"; 
}