function buildCityMenu(c,cid,hint,span_id,var_name,province)
{
	

	
		var str="<select name=\""+var_name+"\">";
		//str+="<option value=\"\">"+hint+"</option>";
		
		
		for (i=0;i<c.length;i++)
		{
			map=c[i].split(",");
			
			if (map[0]==province || province == "")
			{
			
			str+="<option value=\""+city_id[i]+"\"";
			
			if (city_id[i]==cid) str+=" selected";
			
			str+=">"+map[1]+"</option>";
			}
		}
		str+="</select>";

	document.getElementById(span_id).innerHTML=str;
}

function buildProvMenu(p,span_id,city_span_id,city_var_name)
{
	var str="<select onchange=buildCityMenu(city_name,1,\"选择城市\",\""+city_span_id+"\",\""+city_var_name+"\",this.options[selectedIndex].text);>";
	str+="<option value=\"\">省份</option>";


	
	for (var i=0;i<p.length;i++)
	{
		str+="<option>"+p[i]+"</option>";
	}
	
	str+="</select>";
	
	document.getElementById(span_id).innerHTML=str;
	
	
}