窗口中改变另窗口控件值
在js函数里如何获取服务器控件值,如<asp:DropDownList runat ="server" ID="DDL_yjm" Width ="221px" DataSourceID="SqlDataSource_yjm" DataTextField="yj" DataValueField="yjm" AutoPostBack ="true" OnSelectedIndexChanged ="DDL_yjm_OnSelectedIndexChanged" ></asp:DropDownList>