function changePrice(district, AreaObj)
{ for (i = 0; i < AreaObj.options.length; i++)
	{ AreaObj.options[i] = null; }
		AreaObj.length = 0;
	switch (district) { 
	case "": 
		AreaObj.add(new Option("不限", "")); 
		AreaObj.options[0].selected = true; 
		break; 
	case "1":
	    AreaObj.add(new Option("租金 元/月",""));
		AreaObj.add(new Option("500以下","0"));
		AreaObj.add(new Option("500-1000","1"));
		AreaObj.add(new Option("1001-1500","2"));
		AreaObj.add(new Option("1501-2000","3"));
		AreaObj.add(new Option("2001-2500","4"));
		AreaObj.add(new Option("2501-3000","5"));
		AreaObj.add(new Option("3001-4000","6"));
		AreaObj.add(new Option("4001-5000","7"));
		AreaObj.add(new Option("5001-8000","8"));
		AreaObj.add(new Option("8001-10000","9"));
		AreaObj.add(new Option("10000以上","10"));
	    break;
	case "2":
        AreaObj.add(new Option("价格 万/套",""));
		AreaObj.add(new Option("10万以下","0"));
		AreaObj.add(new Option("10－20万","1"));
		AreaObj.add(new Option("20－30万","2"));
		AreaObj.add(new Option("30－40万","3"));
		AreaObj.add(new Option("40－50万","4"));
		AreaObj.add(new Option("50－60万","5"));
		AreaObj.add(new Option("60－70万","6"));
		AreaObj.add(new Option("70－80万","7"));
		AreaObj.add(new Option("80－90万","8"));
		AreaObj.add(new Option("90－100万","9"));
		AreaObj.add(new Option("100万以上","10"));
	    break;
	}
}