MySql form

[bodyland]

Hi:  I have a code here that's supposed to be designed to be able to update a MySql table. Another part of htis page works to add new entries, and it works fine, but I can't edit material that's already there. This is the part of the page I think that deals with editing info. I don't know what's wrong with it.

[code]function ShowEditRecord() {

include('variables.php');
$edit_str = CookieSupport();
// $edit_str.= "<br><br>";
$edit_str.= "<form method=\"POST\" action=\"data.php?pg=".$_COOKIE['pg']."\" name=\"editform\">";
$edit_str.= "<table width=\"500\" cellspacing=\"1\" cellpadding=\"0\" align=\"center\" border=\"0\">";
for ($i=0;$i<=20;$i++) {
$edit_str.= "<input type=\"text\" name=\"".$dbcol_name[$i]."\" class=\"hiddenbtn\">";
$edit_str.= "<script> window.editform.".$dbcol_name[$i].".value= '".$GLOBALS[$dbcol_name[$i]]."';</script>";
}
for ($i=1;$i<=20;$i++) {
$edit_str.= "  <tr>";
$edit_str.= "    <td class=\"link\" width=\"150\">".$col_name[$i]."</td>";
$edit_str.= "    <td><input type=\"text\" name=\"new".$dbcol_name[$i]."\" class=\"fields\"></td>";
$edit_str.= "    <td><input type=\"text\" name=\"old".$dbcol_name[$i]."\" class=\"hiddenbtn\"></td>";
$edit_str.= "  </tr>";
$edit_str.= "<script>";
$edit_str.= "  window.editform.new".$dbcol_name[$i].".value= Get_Cookie('old".$dbcol_name[$i]."');";
$edit_str.= "  window.editform.old".$dbcol_name[$i].".value= Get_Cookie('old".$dbcol_name[$i]."');";
$edit_str.= "</script>";
}
$edit_str.= "  <tr>";
$edit_str.= "    <td height=\"50\" align=\"center\" colspan=\"3\">";
$edit_str.= "      <input class=\"buttons\" type=\"submit\" name=\"EditOK\" value=\"  OK  \">";
$edit_str.= "      <input class=\"buttons\" type=\"button\" name=\"cancel\" value=\"Cancel\" onclick=\"history.back()\">";
$edit_str.= "    </td>";
$edit_str.= "  </tr>";
$edit_str.= "</table>";
$edit_str.= "</form>";
$edit_str.= "";
return $edit_str;
}
[/code]