mouseover function not work on firefox with dynamic created dropdown menu

[SunshineInTheRain]

The following code is dynamic create dropdownmenu which data within pulled from database
However, the code work well on IE but not on Firefox. On Firefox, the whole mouseover and mouseout function din't work. what is not supported on Firefox? the javascript syntax? please help as i am not familiar with javascript. thanks in advanced. this is quite urgent.... please..

By the way hope there has somebody may help me find out why the design may not in proper way like in IE for Firefox. the padding and space between table and table all not in proper.... why is it happen? hope somebody may find out from HTML i provide here.

 
 
 Private Sub fnBindDataUser()
        Dim conn As SqlConnection
        Dim ds As DataSet
        conn = New SqlConnection(ConfigurationManager.AppSettings("ConnectionStringTest"))
        conn.Open()
        Try
            ds = SqlL.ExecuteDataset(conn, CommandType.Text, "SELECT * FROM tblCT")
            fnCreateAddressDataGrid(ds)
        Catch ex As Exception
            clsCommon.MsgBox(Me, "Message", ex.Message & " msg3")
            ds = Nothing
        Finally
            conn.Close()
        End Try
        dgUser.DataSource = ds
        dgUser.DataBind()
        dgUser.Font.Underline = False
    End Sub
 
  Private Sub fnCreateAddressDataGrid(ByVal dsUser As DataSet)
        Dim dr As DataRow
        Dim boldisp As Boolean
        Dim bolbgimg As Boolean
        boldisp = False
        bolbgimg = False
        For Each dr In dsUser.Tables(0).Rows
            Dim I As Integer = 0
            Dim dgAddress As New DataList
            Dim col As BoundColumn = New BoundColumn()
            Dim tcl1 As TemplateColumn = New TemplateColumn()
            Dim tcl2 As TemplateColumn = New TemplateColumn()
            dgAddress.ID = "dgAddress_" & dr("CustTID").ToString
            'Image
            Dim btnImg As Image = New Image
            Dim aImg As HtmlAnchor = New HtmlAnchor
            Dim tblItem As Table = New Table
            Dim tr As TableRow = New TableRow
            Dim tc As TableCell = New TableCell
            btnImg.ID = "bntImgAddress_" & dr("CustTID").ToString
            aImg.ID = "aImgAddress_" & dr("CustTID").ToString
            '  aImg.HRef = "products/product.aspx?CID=" & CID & "&cuid=" & dr("CustTID").ToString 'dr("CustTGatewayURL").ToString
            aImg.HRef = dr("CustTGatewayURL").ToString
            aImg.Target = "_blank"
            btnImg.ImageUrl = dr("CustTImgGateway").ToString
            aImg.Controls.Add(btnImg)
 
            If boldisp = False Then
                dgAddress.Attributes.Add("style", "display:block")
                tblItem.Attributes.Add("style", "display:block")
                aImg.Style.Value = "display:block"
                boldisp = True
            Else
                dgAddress.Attributes.Add("style", "display:none")
                tblItem.Attributes.Add("style", "display:none")
                aImg.Style.Value = "display:none"
            End If
            col.HeaderText = "Address"
            col.DataField = "Address"
            dgAddress.ItemTemplate = New CreateItemTemplateLinkBtn("lnkBtn", "Message", "doLink", "lblCustTID", bolbgimg, "lblnew")
            If bolbgimg = False Then
                bolbgimg = True
            Else
                bolbgimg = False
            End If
            AddHandler dgAddress.ItemDataBound, AddressOf dgAddress_ItemDataBound
            AddHandler dgAddress.ItemCommand, AddressOf dgAddress_ItemCommand
 
            dgAddress.DataSource = fnBindDataAddress(dr("CustTID").ToString)
            dgAddress.DataBind()
            dgAddress.Width = "748"
            dgAddress.Height = "82"
            dgAddress.ItemStyle.Width = "155"
            dgAddress.ItemStyle.Wrap = True
            dgAddress.ItemStyle.VerticalAlign = VerticalAlign.Top
            dgAddress.ItemStyle.HorizontalAlign = HorizontalAlign.Left
            dgAddress.Font.Name = "Arial"
            dgAddress.Font.Size = "8"
            dgAddress.RepeatLayout = RepeatLayout.Table
            dgAddress.RepeatDirection = RepeatDirection.Horizontal
            dgAddress.RepeatColumns = 5
            dgAddress.CellPadding = "0"
            dgAddress.CellSpacing = "0"
            dgAddress.Style.Value = "text-align:top;"
 
            Dim arrColor() As String
            arrColor = Split(dr("CustTTabColor").ToString, ",")
 
            tblItem.BackColor = System.Drawing.Color.FromArgb(arrColor(0), arrColor(1), arrColor(2))
            tblItem.ID = "tblItem" & dr("CustTID").ToString
            tc.Controls.Add(dgAddress)
            tr.Controls.Add(tc)
            tblItem.Controls.Add(tr)
 
            tr.Width = "748"
            tr.Height = "80"
            tr.Style.Value = "vertical-align:top;text-align:top;"
 
            tblItem.CellPadding = "0"
            tblItem.CellSpacing = "0"
            phAddress.Controls.Add(tblItem)
            phBannerImg.Controls.Add(aImg)
 
        Next
    End Sub
 
  Protected Sub dgUser_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataListItemEventArgs) Handles dgUser.ItemDataBound
        If e.Item.ItemType = ListItemType.AlternatingItem Or e.Item.ItemType = ListItemType.Item Then
            Dim tblUser As Table = CType(e.Item.FindControl("tblUser"), Table)
            Dim lblUserID As Label = CType(e.Item.FindControl("lblUserID"), Label)
            Dim lnkCustType As LinkButton = CType(e.Item.FindControl("lbCustTypeName"), LinkButton)
            tblUser.Attributes.Add("onmouseover", "jshow( 'tblItem" & lblUserID.Text & "','tblItem','aImgAddress_" & lblUserID.Text & "','aImgAddress_');")     
            tblUser.Attributes.Add("onmouseout", "jshow( 'tblItem" & lblUserID.Text & "','tblItem','aImgAddress_" & lblUserID.Text & "','aImgAddress_');")        tblUser.BackImageUrl = CType(e.Item.FindControl("lblimg"), Label).Text
        End If
    End Sub
 
 

[HTML]
<script type="text/javascript">
function jshow(id, idname,imgid, imgidname)
{
var div = document.getElementById('div');
var child = div.childNodes;
var numchild = child.length;
var ctlname;
var obj;
var divimg = document.getElementById('divimg');
var childimg = divimg.childNodes;
var numchildimg = childimg.length;
var ctlimgname;
var objimg;

for(var i = 0; i < numchild; i++)
{
ctlname = child[i].id;
if (ctlname.indexOf(idname) >= 0)
{
child[i].style.display = 'none';
}
}
for(var j = 0; j < numchildimg; j++)
{
ctlimgname = childimg[j].id;
if(typeof ctlimgname == 'string')
{
if (ctlimgname.indexOf(imgidname) >= 0)
{
childimg[j].style.display = 'none';
}
}
}

obj = document.getElementById(id);
obj.style.display = 'block';
objimg = document.getElementById(imgid);
objimg.style.display = 'block';

}
</script>

<div id="div">
<asp:DataList ID="dgUser" Width="748px" runat="server" RepeatDirection="Horizontal" RepeatColumns="5" ItemStyle-VerticalAlign="Top" cellspacing="0" cellpadding="0" ItemStyle-HorizontalAlign="Left" >
<ItemTemplate>
<asp:Table runat="server" id="tblUser" style="display:block;cursor:pointer; width: 100%; font-family: Arial; font-size: 9pt; font-weight: 700; height: 30px;" cellspacing="0" cellpadding="0">
<asp:TableRow Visible="false" >
<asp:TableCell Width="100%">
<asp:Label ID="lblUserID" ForeColor="White" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "CustTID")%>' ></asp:Label>
</asp:TableCell>
<asp:TableCell Width="100%">
<asp:Label ID="lblBanner" ForeColor="White" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "CustTImgGateway")%>' ></asp:Label>
</asp:TableCell>
<asp:TableCell Width="100%">
<asp:Label ID="lblBannerURL" ForeColor="White" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "CustTGatewayURL")%>' ></asp:Label>
</asp:TableCell>
</asp:TableRow>
<asp:TableRow ID="trCustTT" >
<asp:TableCell id="tcCustTI" ColumnSpan="3">
&nbsp;&nbsp;<asp:LinkButton ID="lbCustTName" ForeColor="White" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "CustTName")%>' CommandName ="SelectCustType" CommandArgument='<%#DataBinder.Eval(Container.Data Item, "CustTID")%>'></asp:LinkButton>
</asp:TableCell>
<asp:TableCell Visible="false" Width="100%">
<asp:Label ID="lblimg" ForeColor="White" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "CustTTabImg")%>' ></asp:Label>
</asp:TableCell>
</asp:TableRow>
</asp:Table>
</ItemTemplate>
</asp:DataList>
<asp:PlaceHolder ID="phAddress" runat="server" Visible="true">
</asp:PlaceHolder>
</div>
[/HTML]

[acoder]

Can you show the client-side version of this? Are there any errors?