function update_FirstMenu( CatID1, subTypeForm ){
	subTypeForm.length=0;
	switch(CatID1){
	case "":
		subTypeForm.options[0]=new Option("--------","");
		subTypeForm.options[0].selected=true;break;
	case "0"://中国
subTypeForm.options[0]=new Option("萨博","7");subTypeForm.options[1]=new Option("丰田","6");subTypeForm.options[2]=new Option("荣威","5");subTypeForm.options[3]=new Option("凯迪拉克","4");subTypeForm.options[4]=new Option("雪佛兰","3");subTypeForm.options[5]=new Option("别克","1");
		subTypeForm.options[0].selected=true;
	break;
	}
return -1;
}
function update_SecondMenu( CatID1, CatID2, subTypeForm ){
subTypeForm.length=0;
switch(CatID1){
case "-1":
	subTypeForm.options[0]=new Option("--------","-1");
	subTypeForm.options[0].selected=true;break;
case "0"://中国
	switch ( CatID2 ){
	case "7":subTypeForm.options[0]=new Option("9-5","23");subTypeForm.options[1]=new Option("9-3","24");subTypeForm.options[1].selected=true;		break;case "6":subTypeForm.options[0]=new Option("威驰","18");subTypeForm.options[1]=new Option("花冠","19");subTypeForm.options[2]=new Option("皇冠","20");subTypeForm.options[3]=new Option("锐志","21");subTypeForm.options[4]=new Option("卡罗拉","22");subTypeForm.options[4].selected=true;		break;case "5":subTypeForm.options[0]=new Option("750","16");subTypeForm.options[1]=new Option("550","17");subTypeForm.options[1].selected=true;		break;case "4":subTypeForm.options[0]=new Option("CTS","13");subTypeForm.options[1]=new Option("SRX","14");subTypeForm.options[2]=new Option("SLS","15");subTypeForm.options[3]=new Option("XLR","30");subTypeForm.options[4]=new Option("凯雷德","31");subTypeForm.options[4].selected=true;		break;case "3":subTypeForm.options[0]=new Option("景程","9");subTypeForm.options[1]=new Option("乐骋","11");subTypeForm.options[2]=new Option("乐风","12");subTypeForm.options[3]=new Option("科帕奇","26");subTypeForm.options[3].selected=true;		break;case "1":subTypeForm.options[0]=new Option("君越","2");subTypeForm.options[1]=new Option("GL8","4");subTypeForm.options[2]=new Option("新凯越","7");subTypeForm.options[3]=new Option("林荫大道","27");subTypeForm.options[4]=new Option("凯越HRV","28");subTypeForm.options[5]=new Option("凯越旅行车","29");subTypeForm.options[6]=new Option("新君威","32");subTypeForm.options[7]=new Option("昂科雷","33");subTypeForm.options[7].selected=true;		break;
	}
	break;}
return -1;
}

function SetSecond(){

	update_SecondMenu("0",CarSearchForm.CarBrand.options[CarSearchForm.CarBrand.options.selectedIndex].value, CarSearchForm.CarBrand2);
	return ;
}

function ChooseMenu(Menuvalue,subTypeForm)
{
   for(i=0;i<subTypeForm.length;i++)
   {
      if (subTypeForm.options[i].value==Menuvalue)
	  {
	     subTypeForm.options[i].selected=true;
		 break;
	  }
   }
}