function ArrayClass2(){var temList=new Array();temList["安徽"]=['池州','合肥','宣城','蚌埠','淮南','安慶'];temList["河南"]=['鄭州','焦作','洛陽'];temList["陜西"]=['西安','漢中','咸陽','延安'];temList["江蘇"]=['南京','蘇州','義烏 ','揚州'];var tIndex=document.getElementById ("ddlStartSitePro").value;var newOption2;document.getElementById ("ddlStartSiteCity").length=0;for(var h in temList[tIndex]){newOption2=new Option(temList[tIndex][h],temList[tIndex][h]);document.getElementById ("ddlStartSiteCity").options.add(newOption2);document .getElementById ("ddlStartSiteCity").value =newOption2;}document .getElementById ("ddlStartSiteCity").selectedIndex =0;}  siteModel.Startsitepro = ddlStartSitePro.Value;        siteModel.Startsitecity = ddlStartSiteCity.Value;省可以插入庫中，市不行(“請選擇市”)，這可如何是好？急！望大蝦解答