function nav_tab(n,showid,hideid,m){
 for(var i=1;i<=m;i++){
  var curC = $(hideid+i);
  var curB = $(showid+i);
  if(n==i){
   curC.style.display="block";
   curB.className="active";
  }else{
   curC.style.display="none";
   curB.className="normal";
  }
 }
}

//
function roll(obj,tagName,delay,speed,lineHeight){
 var slideBox = $(obj);
 if(!slideBox)return;
 var tid = null,pause = false;
 var objHeight = slideBox.offsetHeight;
 var item_count = $tag(slideBox,tagName).length;
 if(item_count<2)return;
 var itemHeight = $tag(slideBox,tagName)[0].offsetHeight;
 var item_total_height = item_count*itemHeight;
 var start = function(){tid = setInterval(slide,speed);};
 var slide = function(){
  if(pause)return;
  slideBox.scrollTop += 2;
  if(slideBox.scrollTop % lineHeight == 0){
   clearInterval(tid);
   slideBox.appendChild($tag(slideBox,tagName)[0]);
   slideBox.scrollTop = 0;
   setTimeout(start,delay);
  }
 }
slideBox.onmouseover=function(){pause=true;};
slideBox.onmouseout=function(){pause=false;};
if(application.isIE){
(objHeight<item_total_height) ? setTimeout(start,2000) : slideBox.style.height = item_total_height + 10;
}else{setTimeout(start,2000);}
}

//
function get_brands(){
 var url = 'ajax.php?action=get_brands';
 ajax.response(ajax_brands,url,get_brands_ed);
}
function get_brands_ed(){
 var html = ajax.request(ajax_brands);
 if(typeof(html)=='undefined')return;
 $('brands_').innerHTML = html;
 get_series();
}

//
function get_series(){
 var brand_id = $('brands').options[$('brands').options.selectedIndex].value;
 if(!is_numeric(brand_id)){$('series_').innerHTML="<select id='series'><option>选择车系</option></select>";$('models_').innerHTML="<select id='models'><option>选择车型</option></select>";return;}
 var url = 'ajax.php?brand_id='+brand_id+'&action=get_series';
 ajax.response(ajax_series,url,get_series_ed);
}
function get_series_ed(){
 var html = ajax.request(ajax_series);
 if(typeof(html)=='undefined')return;
 $('series_').innerHTML = html;
 get_models();
}

//
function get_models(){
 var serie_id = $('series').options[$('series').options.selectedIndex].value;
 if(!is_numeric(serie_id)){$('models_').innerHTML="<select id='models'><option>选择车型</option></select>";return;}
 var url = 'ajax.php?serie_id='+serie_id+'&action=get_models';
 ajax.response(ajax_models,url,get_models_ed);
}
function get_models_ed(){
 var html = ajax.request(ajax_models);
 if(typeof(html)=='undefined')return;
 $('models_').innerHTML = html;
}

//
function add_sale(){
 var brand_id = $('brands').options[$('brands').options.selectedIndex].value;
 var serie_id = $('series').options[$('series').options.selectedIndex].value;
 var model = $('models').options[$('models').options.selectedIndex].value;
 var other_brand = $('other_brand').value;
 var other_model = $('other_model').value;
 var year = $('year').options[$('year').options.selectedIndex].value;
 var month = $('month').options[$('month').options.selectedIndex].value;
 var plate = $('plate').options[$('plate').options.selectedIndex].value;
 var color = $('color').value;
 var skylight = $('skylight').options[$('skylight').options.selectedIndex].value;
 var mileage = $('mileage').value;
 var buy_price = $('buy_price').value;
 var sale_price = $('sale_price').value;
 var user_name = $('user_name').value;
 var mobile = $('mobile').value;
 var car_info = '';
 var gear = $('gear').options[$('gear').options.selectedIndex].value;
 var other_info = $('other_info').value;
 
 var display = $('brands_series_models_box').style.display;
 if(empty(display)){
  if(!is_numeric(brand_id)){showmsg('msg','error','请选择品牌');$('brands').focus();return;}
  if(!is_numeric(serie_id)){showmsg('msg','error','请选择车系');$('series').focus();return;}
  if(empty(model)){showmsg('msg','error','请选择车型');$('models').focus();return;}
 }else{
  if(empty(other_brand)){showmsg('msg','error','请输入您的车辆品牌/车型');$('other_brand').focus();return;}
  if(empty(other_model)||other_model=='如: 排量, 手动/自动, 是否有天窗, 等等...'){showmsg('msg','error','请输入您车辆的主要信息');$('other_model').focus();return;}
  brand_id = 0;serie_id = 0;model = '';
  car_info = "车辆品牌/车型："+other_brand+"\n车辆的主要信息："+other_model;
 }
 if(!empty(other_info) && other_info!='如： 导航， 真皮座椅，加热座椅，  安全气囊， 等...'){car_info += "\n其他配置："+other_info;}
 if(empty(year)){showmsg('msg','error','请选择出厂年份');$('year').focus();return;}
 if(empty(month)){showmsg('msg','error','请选择月份');$('month').focus();return;}
 year = year+'/'+month;
 if(empty(plate)){showmsg('msg','error','请选择牌照类型');$('plate').focus();return;}
 if(empty(color)){showmsg('msg','error','请输入车身颜色');return;}
 if(empty(mileage)){showmsg('msg','error','请输入公里数');return;}
 if(buy_price=='选填')buy_price='';
 if(sale_price=='选填')sale_price='';
 if(empty(user_name)){showmsg('msg','error','请输入您的姓名');return;}
 if(!is_mobile(mobile)){showmsg('msg','error','请正确输入您的手机号码');return;}
 
 $('btn').disabled = true;
 showmsg('msg','loading','正在提交,请稍候..');
 var url = 'ajax.php?brand_id='+brand_id+'&serie_id='+serie_id+'&model='+encodeURIComponent(model)+'&car_info='+encodeURIComponent(car_info)+'&year='+year+'&plate='+encodeURIComponent(plate)+'&color='+encodeURIComponent(color)+'&skylight='+skylight+'&mileage='+encodeURIComponent(mileage)+'&buy_price='+encodeURIComponent(buy_price)+'&sale_price='+encodeURIComponent(sale_price)+'&user_name='+encodeURIComponent(user_name)+'&mobile='+encodeURIComponent(mobile)+'&gear='+encodeURIComponent(gear)+'&action=add_sale';
 ajax.response(xml,url,add_sale_ed);
}
function add_sale_ed(){
 var html = ajax.request(xml);
 if(typeof(html)=='undefined')return;
 if(html.indexOf("succeed")!=-1){
  html = "信息提交成功";
  showmsg('msg','succeed',html);
  alert('您的卖车信息已经成功提交, 我们将在30分钟内向您提供一个准确的报价. 敬请期待!');
  winreload();
 }else{
  $('btn').disabled = false;
  showmsg('msg','error',html);
 }
}

//
function show_other_model(){
 setDisplay('brands_series_models_box','none');
 setDisplay('other_info_box','block');
}

function show_other_model1(){
 setDisplay('brands_series_models_box','block');
 setDisplay('other_info_box','none');
}