// JavaScript Document
function secBoard(n)
{
for(i=0;i<supportmenu.childNodes.length;i++)
supportmenu.childNodes[i].className="sec1";
supportmenu.childNodes[n].className="sec2";
for(i=0;i<supportmain.childNodes.length;i++)
supportmain.childNodes[i].style.display="none";
supportmain.childNodes[n].style.display="block";
}