var twocount;
twocount=0;
sc = new Array();
sc[0] = new Array('市中心','市中心');
sc[1] = new Array('天宁区','天宁区');
sc[2] = new Array('钟楼区','钟楼区');
sc[3] = new Array('新北区','新北区');
sc[4] = new Array('武进区','武进区');
sc[5] = new Array('戚墅堰','戚墅堰');
sc[6] = new Array('市郊区','市郊区');
sc[7] = new Array('金坛市','金坛市');
sc[8] = new Array('溧阳市','溧阳市');
twocount=9;
//配合上面生成出来得Javascript数组，控制地区和区域得对应关系
function ChangeDistrict(formname,strDistrict){
	formname.strDistrictSmall.length = 0;
	var i;
	formname.strDistrictSmall.options[0] = new Option('请选择','');
	for (i=0;twocount>i; i++)
	{
		if (sc[i][1] == strDistrict)
		{
			formname.strDistrictSmall.options[formname.strDistrictSmall.length] = new Option(sc[i][0], sc[i][0]);
		}
	}
}
//定位希望区域得默认值
function ChangeDistrictEd(formname,strDistrictSmall){
	var i;
	formname.strDistrictSmall.selectedIndex = 0;
	for (i=0;formname.strDistrictSmall.length>i; i++)
	{
		if(formname.strDistrictSmall.options[i].value == strDistrictSmall )
		{
			formname.strDistrictSmall.selectedIndex = i;
		}
	}
}