How to get text of itab header and structure field name dynamically?

Question

HI.
I'm just trying display itab to web.
of cause I can use <htmlb:tableView> but I need display by loop itable  for my special reason.
the table is dynamic structure that means header line should be changes depends on structure description.
'<htmlb:tableView>' certainly can display header line dynamically with just itable only.
but don't know how to get these text and structure field name without 'tableView'.
help me please.
Thank you.
<TABLE border=1>
<TR style="background-color:#FFFF99" >
     <TD>header 1</TD>
     <TD>header 2</TD>
     <TD>header 3</TD>
</TR>
<%
DATA: WA_STR TYPE FOPT_BSP_UI_REPORT.
LOOP AT TT_itab INTO WA_STRUC.
%>
<TR>
     <TD nowrap><%=WA_STRUC-ORGUNIT_T%></TD>
     <TD nowrap><%=WA_STRUC-PRGROUP_T%></TD>
     <TD nowrap><%=WA_STRUC-PROCESS_T%></TD>
</TR>
<%ENDLOOP.%>
</TABLE>

Answer 1

DDIC structure means struture made from SE11?
if yes,that's what I'm trying to display table.
and my sepcial reason is this:
my final purpose is download dynamic table to excel file.
but when I download table comes form "<htmlb:tableView>" with changing http response header that shows some link error and useless icon and no table grid and etc...
"<htmlb:tableView>" resulting lot of useless tags and script.
think iterator has no function removing extra tags
so  I'am trying to make simple html table.
but problem is that itable is not just one structure can be more than 100 kinds of structure.
in this situation is there any way to display dynamic itab into simple html table?