...
<script language=C# runat=server>
void Page_Load(Object Sender, EventArgs e)
{
	SqlConnection conn=(SqlConnection)Session["sqlCon"];
	SqlDataAdapter da=new SqlDataAdapter("select * from tblDepts",conn);
	DataSet ds=new DataSet();
	da.Fill(ds,"tblDepts");
	ShowDepth(ds);
}
</script>
...

...
<%
void ShowDepth(DataSet ds)
{
foreach(DataRow row in ds.Tables[ 0 ].Rows)
{
%>
	<div  onmouseover='over(l<%=row[0]%>)' onmouseout='out(l<%=row[0]%>)'  class=menu id="l<%=row[0]%>">
		<%=row[ 1 ]%></div>
<%
}
}
%>
...