php změna grafu

<div class="full">
    <h3>Last 30 days </h3>
    <table height="230" width="100%" cellpadding="0" cellspacing="0" align="right">
    <tr valign="bottom" height="210">
    <?PHP
    // User der letzten 30 Tage abfragen
    $bar_nr=0;
    $bar_mark="";
    for($day=29; $day>=0; $day--)
        {
        $sel_timestamp = mktime(0, 0, 0, date("n"), date("j")-$day, date("Y"));
        $sel_tag = date("Y.m.d",$sel_timestamp);
        $abfrage=mysql_query("select sum(user) from ".$db_prefix."Day where day='$sel_tag'");
        $User=mysql_result($abfrage,0,0);
        mysql_free_result($abfrage);
        
        $bar[$bar_nr]=$User; // Im Array Speichern
        $bar_title[$bar_nr] = date("j.M.Y",$sel_timestamp);
        
        if (date("j")-$day == 1) $bar_mark = $bar_nr;
        if ( date("w", $sel_timestamp) == 6 OR date("w", $sel_timestamp)== 0) {$weekend[$bar_nr]=true;}
        else {$weekend[$bar_nr]=false;}
        
        $bar_nr++;
        }
    // Diagramm         
    for($i=0; $i<$bar_nr; $i++)
        {
        $value=$bar[$i];
        if ($value == "") $value = 0;
        if (max($bar) > 0) {$bar_hight=round((200/max($bar))*$value);} else $bar_hight = 0;
        if ($bar_hight == 0) $bar_hight = 1;    
        if ($bar_mark == "$i" ) { echo "<td style=\"border-left: #FF0000 1px dotted;\" width=\"31\">";}
        else echo "<td width=\"31\">";
        echo "<div class=\"bar\" style=\"height:".$bar_hight."px;\" title=\"".$bar_title[$i]." - $value Visitors\"></div></td>\n";
        }
    ?>
    </tr><tr height="20">
    <td colspan="6" class="timeline"><?PHP echo date("j.M",mktime(0, 0, 0, date("n"), date("j")-29, date("Y"))); ?></td>
    <td colspan="6" class="timeline"><?PHP echo date("j.M",mktime(0, 0, 0, date("n"), date("j")-23, date("Y"))); ?></td>
    <td colspan="6" class="timeline"><?PHP echo date("j.M",mktime(0, 0, 0, date("n"), date("j")-17, date("Y"))); ?></td>
    <td colspan="6" class="timeline"><?PHP echo date("j.M",mktime(0, 0, 0, date("n"), date("j")-11, date("Y"))); ?></td>
    <td colspan="6" class="timeline"><?PHP echo date("j.M",mktime(0, 0, 0, date("n"), date("j")-5, date("Y"))); ?></td>
    </tr></table>
  </div>

<div class="block_content tab_content" id="days">
                    
                    <table class="stats" rel="line" cellpadding="0" cellspacing="0" width="100%">
                    
                        <thead>
                            <tr>
                                <td>&nbsp;</td>
                                <th scope="col">01.04</th>
                                <th scope="col">31.03</th>
                                <th scope="col">30.03</th>
                                <th scope="col">29.03</th>
                                
                            
                            </tr>
                        </thead>
                        
                        <tbody>
                            <tr>
                                <th>Page views</th>
                                <td>1</td>
                                <td>33</td>
                                <td>6</td>
                                <td>4</td>
                                
                            
                                
                            </tr>
                            
                        </tbody>
                    </table>
                    
                </div>