获取局部DIV的滚动条当前点击位置定位

VoucherDetailInfoPanel 是div 的ID
TextBox1 是临时存放值得控件
75  是指减去头标题高度
前台脚本如下：
function GetPostion(e)
    {
        var element = document.getElementById("<%=VoucherDetailInfoPanel.ClientID %>");
        if( document.selection)
        {
            var range = document.selection.createRange();
            var stored_range = range.duplicate();
            stored_range.moveToElementText( element );
            stored_range.setEndPoint( 'EndToEnd', range );
            element.selectionStart = stored_range.text.length - range.text.length;
            element.selectionEnd = element.selectionStart + range.text.length;
            document.getElementById("<%=TextBox1.ClientID %>").value=element.selectionStart;
         }
    }
  function GetScrollTop() {
    //debugger;
            var div = document.getElementById("<%=VoucherDetailInfoPanel.ClientID %>");            
            div.scrollTop =document.getElementById("<%=TextBox1.ClientID %>").value-75;
        }

脚本或者这样也可以 Begin

    function GetPostion()
    {    //debugger;
        var element = document.getElementById("<%=VoucherDetailInfoPanel.ClientID %>");
        if( document.selection)
        {
           document.getElementById("<%=TextBox1.ClientID %>").value=element.scrollTop+75;
         }
    }
  function GetScrollTop() {
     //debugger;
            var div = document.getElementById("<%=VoucherDetailInfoPanel.ClientID %>");            
            div.scrollTop =document.getElementById("<%=TextBox1.ClientID %>").value-75;
        }
End

后台代码
VoucherDetailGrid 列表控件 是GridView控件
 protected void VoucherDetailGrid_RowEditing(object sender, GridViewEditEventArgs e)
        {
            if (e.NewEditIndex != VoucherDetailGrid.EditIndex)
            {
                int newEditRow = e.NewEditIndex;
                EditRow(newEditRow);
                ScriptManager.RegisterStartupScript(this, this.GetType(), "", "<script language='javascript'>GetScrollTop();</script>", false);// 这是调用前台的脚本            
            }
        }

  protected void VoucherDetailGrid_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            int finSetCode = 0;
            int j = 0;
            if (ViewState[VIEWSTATE_FINSETCODE] != null)
            {
                finSetCode = Int32.Parse(ViewState[VIEWSTATE_FINSETCODE].ToString());
            }
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                VoucherDetailGrid.Attributes.Add("onclick", "GetPostion(event);");  // 这是调用前台的脚本
                for (int i = 1; i < VoucherDetailGrid.Columns.Count; i++)
                {
                    DataControlField dgc = VoucherDetailGrid.Columns[i];
                    if (dgc.HeaderText != String.Empty)
                    {
                        TCcVoucherSettingInfo tCcVoucherSettingInfo = BizVoucherSetting.GetVoucherItemByName(finSetCode, dgc.HeaderText);
                        if (tCcVoucherSettingInfo != null)
                        {
                            string voucherSettingId = tCcVoucherSettingInfo.VoucherSettingID;
                            string itemValue = String.Empty;
                            if (tCcVoucherSettingInfo.ItemType == (int)VoucherItemType.Dimension)
                            {
                                if (e.Row.FindControl(dgc.HeaderText + EDITTEXTBOX) != null)
                                {
                                    bool isNo = BizFromAccount.IsFromAccountType(Convert.ToInt32(tCcVoucherSettingInfo.TypeValue),Convert.ToInt32(tCcVoucherSettingInfo.FinSetCode));
                                    TextBox txb = (TextBox)e.Row.FindControl(dgc.HeaderText + EDITTEXTBOX);
                                    string txbClient = txb.ClientID;
                                    txb.Attributes.Add("onclick", "rowAccount(\'" + e.Row.RowIndex + "\',\'" + isNo + "\');__showDivContainer(\'" + txbClient + "\',\'" + tCcVoucherSettingInfo.FinSetCode + "\',\'" + tCcVoucherSettingInfo.TypeValue + "\');__DropDownClick(\'" + this.cc_MemberSelector.ClientID + "_divContainer\',\'150px\',\'" + txbClient + "\');  __setPosition(\'" + this.cc_MemberSelector.ClientID + "_divContainer\')");
                                    txb.Attributes.Add("isAccount", "true");
                                    txb.Attributes.Add("TypeValue", tCcVoucherSettingInfo.TypeValue);
                                    
                                }
                             
                            }
                        }
                    }
                }
            }           
        }