Using a "onclick" to show data from mysql. PLEASE HELP.

Original - php Code <FORM METHOD = "post" NAME="update_user" ACTION = "<? echo $PHP_SELF ?>"> <INPUT TYPE="Hidden" NAME="action" VALUE="show_users"> <SELECT NAME="wm_id" SIZE="6" STYLE="width=205px"> <?php $show_list = 0; $user_list = generate_user_id_list(); For ($i=0; $i < sizeof($user_list); $i++) { echo "<OPTION VALUE=".$user_list[$i]['wm_id']." onClick=show()>".$user_list[$i]['wm_id']." - ".$user_list[$i]['f_name']." ".$user_list[$i]['l_name']."</OPTION>"; } ?> </TD> </TR> <TR> <TD> <br> <br> <br> <INPUT TYPE="Submit" VALUE="View user" SIZE="10" onClick="alert_wm_id()"> </TD> </TR> <TR> <TD> <?php IF (!$show_list == 0) { echo "<br><br><br><br>TEST"; } ?> </TD> </TR>

 
<FORM METHOD = "post" NAME="update_user" ACTION = "<? echo $PHP_SELF ?>">
        <INPUT TYPE="Hidden" NAME="action" VALUE="show_users">
        <SELECT NAME="wm_id" SIZE="6" STYLE="width=205px">
        <?php
         $show_list = 0;
         $user_list = generate_user_id_list();
         For ($i=0; $i < sizeof($user_list); $i++)
            {
             echo "<OPTION VALUE=".$user_list[$i]['wm_id']." onClick=show()>".$user_list[$i]['wm_id']." - ".$user_list[$i]['f_name']." ".$user_list[$i]['l_name']."</OPTION>";
            }
        ?>
     </TD>
    </TR>
    <TR>
     <TD>
        <br>
        <br>
        <br>
        <INPUT TYPE="Submit" VALUE="View user" SIZE="10" onClick="alert_wm_id()">
     </TD>
     </TR>
     <TR>
      <TD>
       <?php
        IF (!$show_list == 0)
            {
             echo "<br><br><br><br>TEST";
            }
       ?>
      </TD>
     </TR>