/*function viewbg(clsname){
	if(clsname=='index'){
		document.getElementById(clsname).className='menu_bg_index';
	}else if(clsname=='koa'){
		document.getElementById(clsname).className='menu_bg_koa';
	}else{
		document.getElementById(clsname).className='menu_bg';
	}
}
function viewbgRestore(clsname){
	document.getElementById(clsname).className='pad';
}*/
function setTab(name,cursel,n){
for(i=1;i<=n;i++){
  var tltle=document.getElementById(name+i);
  var list=document.getElementById("list_"+name+"_"+i);
  tltle.className=i==cursel?"hover":"";
  list.style.display=i==cursel?"block":"none";
 }
}