admin manageable Front Page Message

On the frontpage there is a chat box with text in it (divider id #frontpage-message).  We would like to make this dynamic so any admin can change that text on a page in the Administration section.  Please be sure to limit the amount of characters a user can input so it does not allow enough text to overflow from the chatbox.

to write the page title and set the url
[code]
else if($type=='CHM')
{
    $external_page_title = elgg_echo('expages:CHM');
}
[/code]

code to generate the form for handling the messages
[code]
/* ds start - CHM */

if($type=="CHM")
{
    $msg = "Edit the Frontpage welcome Message here. <br /><br />";
   
    $chatMessageForm = <<<EOT
        <form method="post" action="">
            <label for="chatMsg">
                Customize the Front Page Chat Message Here. [Max : 50 characters]
            </label>
            <textarea id="chatMsg" name="chatMsg" rows="5" cols="25">$msgNow</textarea>
            <br />
            <input type="submit" name="chmsubmit" value="Update" />
        </form>
EOT;
    echo $chatMessageForm;
   
    $form_body = $msg;
}

/* ds END - CHM */
[/code]

code to save the new message to the database

[code]
/* ds new - 10.02.2011 */
    /* save the new message to the database*/
    if(isset($_POST["chatMsg"]))
    {
        $newMsg = substr(addslashes(mysql_real_escape_string($_POST["chatMsg"])),0,50);
       
        $isTableFound = 0;
       
        $tables = mysql_list_tables ($CONFIG->dbname);
        while (list ($temp) = mysql_fetch_array ($tables))
        {
            if ($temp == $tableName)
            {
                $isTableFound = 1;
                break;
            }
            else
                $isTableFound = 0;
        }
       
        if($isTableFound == 0)
        {
            $tblCreateQuery = "CREATE TABLE `{$CONFIG->dbname}`.`{$tableName}` (
                            `id` INT( 11 ) NOT NULL AUTO_INCREMENT ,
                            `msg` VARCHAR( 150 ) NOT NULL ,
                            `dt` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ,
                            PRIMARY KEY ( `id` )
                            ) ENGINE = InnoDB ";
                           
            $tableResult = mysql_query($tblCreateQuery);
           
            if($tableResult)
            {
                $insertMsgQuery = "INSERT INTO ".$tableName." VALUES('".$newMsg."')";
                $insResult = mysql_query($insertMsgQuery);
            }
            else
                echo "table creation failure";
        }
        else
        {
            $updateMsgQuery = "UPDATE {$tableName} SET msg='".$newMsg."' WHERE id=1";
            $insResult = mysql_query($updateMsgQuery);
        }
        echo "<strong>Message Updated Successfully<strong>";
    }   
}

$msgQuery = "SELECT msg FROM {$tableName} WHERE id=1";
$result = mysql_query($msgQuery);
$row = mysql_fetch_row($result);
$msgNow = stripslashes($row[0]);

/* ds new - 10.02.2011 */
[/code]