function initialization(districtObj){
	districtObj.add(new Option("不限","不限"));
	districtObj.add(new Option("湘桥区","湘桥区"));
	districtObj.add(new Option("枫溪区","枫溪区"));
	districtObj.add(new Option("潮安县","潮安县"));
	districtObj.add(new Option("饶平县","饶平县"));
}


function changeRegion(district,regionObj, MrRegion) {


	for (i = 0; i < regionObj.options.length; i++) {
		regionObj.options[i] = null;
	}
	regionObj.length = 0;

        if(MrRegion != null)
        {
        regionObj.add(new Option(MrRegion,MrRegion));
        }

	switch (district) {
		case "":
			regionObj.add(new Option("不限", ""));
			regionObj.options[0].selected = true;
			break;

		case "湘桥区":
			regionObj.add(new Option("不限","不限"));
			regionObj.add(new Option("湘桥","湘桥"));
			regionObj.add(new Option("西湖","西湖"));
			regionObj.add(new Option("金山","金山"));
			regionObj.add(new Option("太平","太平"));

			regionObj.add(new Option("南春","南春"));
			regionObj.add(new Option("西新","西新"));
			regionObj.add(new Option("桥东","桥东"));
			regionObj.add(new Option("城西","城西"));
			regionObj.add(new Option("凤新","凤新"));
			regionObj.add(new Option("意溪","意溪"));
			regionObj.options[0].selected = true;
			break;

		case "枫溪区":
			regionObj.add(new Option("不限","不限"));
			regionObj.add(new Option("枫溪","枫溪"));
			regionObj.options[0].selected = true;
			break;

		case "潮安县":
			regionObj.add(new Option("不限","不限"));
			regionObj.add(new Option("潮安","潮安"));
			regionObj.options[0].selected = true;
			break;

		case "澄海":
			regionObj.add(new Option("不限","不限"));
			regionObj.add(new Option("饶平","饶平"));
			regionObj.options[0].selected = true;
			break;

	}
}