var overTimer=null;
var overTimev=200;
function sub_change(tabNumber,shuliang,nav_name,sub_name,style_name){
for (i = 1; i <= shuliang; i++) {
        document.getElementById(sub_name + i).style.display = 'none';
	document.all[nav_name+i].className=style_name+i+"_off";
}
      	document.getElementById(sub_name + tabNumber).style.display = '';
	document.all[nav_name+tabNumber].className=style_name+tabNumber+"_on";
	  
}

//阿弥陀佛~~~说明就一下tabNumber,shuliang,nav_name,sub_name,style_name分别为，本导航数字ID号，切换导航按纽数量，导航名字前缀，导航相对应的div的名字前缀,样式名称前缀

function nav_over_change(myNumber,shuliang){
  if((overTimer!=null)) window.clearTimeout(overTimer);
  overTimer=window.setTimeout(function(){nav_change(myNumber,shuliang)},overTimev);
}

function nav_out_change(){
  if((overTimer!=null)) window.clearTimeout(overTimer);
}

function nav_change(myNumber,shuliang){
for (i = 1; i <= shuliang; i++) {
  //document.getElementById('sub_nav_'+i).style.display = 'none';
	document.getElementById('searchmenu_'+i).className='searchmenu_off';	//大table背景 
	document.getElementById('guang_bai_'+i).className="guang_bai";//小table发光
	document.getElementById('nav_a_'+i).className='blue14a';//链接样式
	document.getElementById('red_arrow_'+i).className=''//小红箭头显示
}
  //document.getElementById('sub_nav_'+myNumber).style.display = '';
  document.getElementById("sub_nav_0").innerHTML = document.getElementById('sub_nav_'+myNumber).innerHTML;
	document.getElementById('searchmenu_'+myNumber).className='searchmenu_on';	        //大table背景 
	document.getElementById('guang_bai_'+myNumber).className="";                        //小table发光
	document.getElementById('nav_a_'+myNumber).className='white14a';                    //链接样式
	document.getElementById('red_arrow_'+myNumber).className='red_arrow_on'             //小红箭头显示
}

function imgnav_change(tabNumber,shuliang,nav_name,sub_name,style_name,nav_Num,nav_shuliang,nav_styleNum){
for (i = 1; i <= shuliang; i++) {
        document.getElementById(sub_name + i).style.display = 'none';
	//document.all[nav_name+i].className=style_name+i+"_off";
}
for (j = 1; j <= nav_shuliang; j++) {
	document.all[nav_name+j].className=style_name+"3";
}
    document.getElementById(sub_name + tabNumber).style.display = '';
	document.all[nav_name+nav_Num].className=style_name+nav_styleNum;
	  
}