/*
通用地区选择代码
areaId 区域id 
areaName 区域名 与id必须同时使用
fix 锁住区域 1 省级 2 市级含以上 3 县级含以上 4,只宣示省份
*/

function AreaSelect(areaId, areaName, fix)
{	
	document.write("<div>");
	document.write("<input type=\"hidden\" id=\"typefix\" name=\"typefix\" value=\"\">");
	document.write("<input type=\"hidden\" id=\"areaId\" name=\"areaId\" value=\"" + areaId + "\">");
	document.write("<input type=\"hidden\" id=\"areaName\" name=\"areaName\" value=\"" + areaName + "\">");
	document.write("<SELECT id=\"province\" style=\"display:none\" check=\"1s\" onChange=\"areaChanged(1, this.value)\">");
	document.write("	<option value=\"\">请选择...</option>");
	document.write("</SELECT>");
	document.write("<SELECT id=\"city\" style=\"display:none\" onChange=\"areaChanged(2, this.value)\">");
	document.write("	<option value=\"\">请选择...</option>");
	document.write("</SELECT>");
	document.write("<SELECT id=\"county\" style=\"display:none\" onChange=\"areaChanged(3, this.value)\">");
	document.write("	<option value=\"\">请选择...</option>");
	document.write("</div>");
	document.write("");
	
	var province = document.getElementById("province");
	var city = document.getElementById("city");
	var county = document.getElementById("county");
	document.getElementById("typefix").Value = fix;
	fillAreaObject(province, "00");
	if (areaId && areaId.length)
	{
		var id = areaId.substr(0, 2);
		setAreaSelectByValue(province, id);
		if(fix!=4){
			if (fix > 0)
				province.disabled = true;
	
			fillAreaObject(city, id);
			if (areaId.length > 2)
			{
				id = areaId.substr(0, 4)
				setAreaSelectByValue(city, id);
				if (fix > 1)
					city.disabled = true;
				fillAreaObject(county, id);
			}
			if (areaId.length > 4)
			{
				setAreaSelectByValue(county, areaId);
				if (fix > 2)
					county.disabled = true;
			}
		}
	}
}

function setAreaSelectByValue(obj, v)
{
	for (var i=0; i<obj.options.length; i++)
	{
		var d = obj.options[i].value.split("@");
		if (v == d[0]) 
		{
			obj.selectedIndex = i;
		}
	}
}

function getAreaByFatherId(fid)
{
	var httpRequest = new XMLHttpRequest();
	var data;
	httpRequest.open("get", "/biaogzx/city.do?fid=" + fid, false);
	httpRequest.setRequestHeader("Content-Type", "text/xml");
	//httpRequest.setRequestHeader("charset", "gb2312");
	httpRequest.send();
	eval(httpRequest.responseText);
	
	return data;
}

function areaChanged(index, v)
{
	var province = document.getElementById("province");
	var city = document.getElementById("city");
	var county = document.getElementById("county");
	var areaId = document.getElementById("areaId");
	var areaName = document.getElementById("areaName");
	
	var d = v.split("@");
	switch (index) 
	{
		case 1:
			if (v == "") 
			{
				areaId.value = "";
				areaName.value = "";
				city.style.display = "none";
				county.style.display = "none";
			}
			else 
			{
				var d = v.split("@");
				areaId.value = d[0];
				areaName.value = d[1];
				if( document.getElementById("typefix").Value == 4 )
					city.style.display = "none";
				else
					fillAreaObject(city, d[0]);
				county.style.display = "none";
			}
			break;
		case 2:
			if (v == "") 
			{
				v = province.value;
				var d = v.split("@");
				areaId.value = d[0];
				areaName.value = d[1];
				county.style.display = "none";
			}
			else 
			{
				var d = v.split("@");
				areaId.value = d[0];
				areaName.value = d[1];
				fillAreaObject(county, d[0]);
			}
			break;
		case 3:
			if (v == "") 
			{
				v = city.value;
				var d = v.split("@");
				areaId.value = d[0];
				areaName.value = d[1];
			}
			else 
			{
				var d = v.split("@");
				areaId.value = d[0];
				areaName.value = d[1];
			}
			break;
		default:
			break;
	}
	//alert(areaId.value);
	//alert(areaName.value);
}

function fillAreaObject(obj, fid)
{
	while (obj.length > 1)
		obj.remove(1);
	
	var data = getAreaByFatherId(fid);
	if (data.length)
		obj.style.display = "";
		
	for (var i=0; i<data.length; i++)
	{
		var op = document.createElement("option");
		op.value = data[i][0] + "@" + data[i][1];
		op.text = data[i][1];
		obj.add(op);
	}
}