function c1it(tabName,btnId,tabNumber){
 for(i=0;i<tabNumber;i++){
  document.getElementById("a"+tabName+i).style.display = "none";
//  document.getElementById("a"+tabName+i).className = "off";
  document.getElementById(tabName+i).style.background="";
   }
 document.getElementById("a"+tabName+btnId).style.display = "block";
// document.getElementById("a"+tabName+btnId).className = "on";
 document.getElementById(tabName+btnId).style.background="url('img/onenavbai.gif')";
}
function nc1it(btnId,tabNumber){
 for(i=1;i<tabNumber;i++){
  document.getElementById("a"+i).style.color = "#959294";
  document.getElementById(i).style.background="url('img/bztypebg.jpg')";
   }
 document.getElementById("a"+btnId).style.color = "#ffffff";
 document.getElementById(btnId).style.background="url('img/ztypebg.jpg')";
}
function img(id)
{
    document.getElementById(""+id+"").src="img/jdian.jpg";
}
function oimg(id)
{
    document.getElementById(""+id+"").src="img/hdian.jpg";
}