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";
  }
  
  <!-- // BannerAD 
var bannerAD=new Array(); 
var bannerADlink=new Array(); 
var adNum=0; 
bannerAD[0]="img/jinlu1.gif"; 
bannerADlink[0]=""; 
bannerAD[1]="img/jinlu2.gif"; 
bannerADlink[1]=""; 
bannerAD[2]="img/jinlu3.gif"; 
bannerADlink[2]=""; 
bannerAD[3]="img/jinlu4.gif"; 
bannerADlink[3]=""; 
bannerAD[4]="img/jinlu5.gif"; 
bannerADlink[4]=""; 

var preloadedimages=new Array(); 
for (i=0;i<bannerAD.length;i++){ 
preloadedimages=new Image(); 
preloadedimages.src=bannerAD; 
} 

function setTransition(){ 
if (document.all){ 
bannerADrotator.filters.revealTrans.Transition=Math.floor(Math.random()*23); 
bannerADrotator.filters.revealTrans.apply(); 
} 
} 

function playTransition(){ 
if (document.all) 
bannerADrotator.filters.revealTrans.play() 
} 

function nextAd(){ 
if(adNum<bannerAD.length-1)adNum++ ; 
else adNum=0; 
setTransition(); 
document.images.bannerADrotator.src=bannerAD[adNum]; 
playTransition(); 
theTimer=setTimeout("nextAd()", 5000); 
} 

function jump2url(){ 
jumpUrl=bannerADlink[adNum]; 
jumpTarget='_blank'; 
if (jumpUrl != ''){ 
if (jumpTarget != '')window.open(jumpUrl,jumpTarget); 
else location.href=jumpUrl; 
} 
} 
function displayStatusMsg() { 
status=bannerADlink[adNum]; 
document.returnValue = true; 
} 

//--> 
<!--



function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->