Mozilla Firefox not getting value innerText

function selectRow(objTR)
{
    for (i = 0; i < ddlModalityList.options.length; i++)
    {
        if (ddlModalityList.options[i].text == objTR.cells[1].innerText.trim())
            break;
    }

    ddlModalityList.options[i].selected = true;
    txtSSAETitle.value = objTR.cells[2].innerText.trim();
    txtSSName.value = objTR.cells[3].innerText.trim();
}

<tr onclick="selectRow(this);">
    <td class="csstablelisttd" style="display: none;" >
        <%#Eval("Acq_Modality_ID")%>
    </td>
    <td class="csstablelisttd" >
        <asp:Label ID="lblModality" runat="server" Text='<%#Eval("Modality")%>'></asp:Label>
    </td>

    <td class="csstablelisttd">
        <asp:Label ID="lblSchdledStAETitle" runat="server" Text='<%#Eval("Scheduled_Station_AE_Title")%>'></asp:Label>
    </td>
    <td class="csstablelisttd">
        <asp:Label ID="lblSchdleStationAEName" runat="server" Text='<%#Eval("SCHEDULED_STATION_NAME")%>'></asp:Label>
    </td>
</tr