function Roly_ProvCity() {
	this.obj = this;
	this.province = "";
	this.city = "";
	this.list = [];
}
function Roly_ProvCity_Province() {
	this.name = "";
	this.cityList = [];
}

Roly.ProvCity.prototype.parseXml = function() {
	var xml = document.all.ProvinceCity;
	if(xml == null || xml == undefined) {
		alert("Error:Can't find xml data!");
		return;
	}
	var root = xml.documentElement;
	
	var def = root.firstChild;
	this.province = def.getAttribute("province");
	this.city = def.getAttribute("city");
	
	for(var i=1;i<root.childNodes.length;i++) {
		var pNode = root.childNodes[i];
		var bean = new Roly.ProvCity.Province();
		bean.name = pNode.getAttribute("name");

		for(var j=0;j<pNode.childNodes.length;j++) {
			var cNode = pNode.childNodes[j];
			bean.cityList[bean.cityList.length] = cNode.getAttribute("name");
		}

		this.list[this.list.length] = bean;
	}
}

Roly.ProvCity.prototype.init = function(p,c) {
	this.parseXml();
	if(p=="null" || c=="null") {
		p = "";
		c = "";
	}
	this.province = p;
	this.city = c;
	var slt_usr = $("province");
	var slt_dpt = $("city");
	if(slt_usr == null || slt_dpt == null)
		return;
	slt_usr.length = 0;
	slt_usr.param = this;
	slt_usr.onchange = this.changeProxy;

	var blank = document.createElement("option");
	blank.setAttribute("value","");
	blank.appendChild(document.createTextNode("------"));
	slt_usr.appendChild(blank);

	slt_dpt.length = 0;
	for(var i=0;i<this.list.length;i++) {
		var bean = this.list[i];
		var op = document.createElement("option");
		op.setAttribute("value",bean.name);
		op.appendChild(document.createTextNode(bean.name));
		if(this.province == bean.name)
			op.selected = true;
		slt_usr.appendChild(op);
	}

	if(this.province != "") {
		this.change(this.province,this.city);
	} else {
		this.change(slt_usr.options[0].value,this.city);
	}

}

Roly.ProvCity.prototype.changeProxy = function() {
	var S = $("province");
	var obj = S.param;
	var prov_name = S.options[S.selectedIndex].value;
	obj.change(prov_name);
}

//褰撻