hi, I want design the dynamic document so I add lines containing data to the table. But, when i want run it, output doesn't appear! the code to edit the inputlines to the data, i refer from a book-javasricpt,but i don't know what this code function and where is store my data?
<a href="javascript:document.forms[0].submit()">Add</a>
how i want create and connect to the dbase use MySQL with this pages?
attach code:

<?php

    #generating session and session id

    session_start();
    $sid = session_id();

    include("html.php");

    #dislaying HTML header

    echo $head;

    #unserializing data

    $stocka = unserialize($stocks);
    $qtya = unserialize($qtys);
    $uoma = unserialize($umos);
    $pricea = unserialize($prices);
    $amounta = unserialize($amounts);

    #checking, if data has been pased to the form

    if (strlen($bill) > 0)
    {
        $sbill = $bill;
        session_register("sbill");
    }

    if (strlen($ship) > 0)
    {
        $sship = $ship;
        session_register("sship");
    }

    if (strlen($invno) > 0)
    {
        $sinvno = $invno;
        session_register("sinvno");
    }

    if ($newstock && ($newstock != ''))
    {
        $count++;
        session_register("count");

        $stocka[$count] = $newstock;
        $stocks = serialize($stocka);
        session_register("stocks");

        $qtya[$count] = $newqty;
        $qtys = serialize($qtya);
        session_register("qtys");

        $uoma[$count] = $newuom;
        $uoms = serialize($uoma);
        session_register("uoms");

        $pricea[$count] = $newprice;
        $prices = serialize($pricea);
        session_register("prices");

        $amounta[$count] = $newamount;
        $amounts = serialize($amounta);
        session_register("amounts");
    }

        # drawing the table

        drawlines($count, $stocka, $qtya, $uoma, $pricea, $amounta);

        # generate an input line

        inputline();

        # displaying end of HTML code

        echo $tail;

    # add lines containing data to the table

    function drawlines($count, $stocka, $qtya, $uoma, $pricea, $amounta)
    {
        for ($i = 1; $i <= $count; $i++)
        {
            echo "<tr><td>$i</td><td>".$stocka[$i]."</td>";
            echo "<td>".$qtya[$i]."</td><td>".$uoma[$i]."</td>";
            echo "<td>".$pricea[$i]."</td>";
            echo "<td>".$amounta[$i]."</td></tr>\n";
        }
    }

    # edit the inputline to the data

    function inputline()

    {
        echo '<tr><td>
            <a href="javascript:document.forms[0].submit()">Add</a>

            </td>
            <td><textarea name="newstock" style="HEIGHT: 60px; WIDTH: 415px"></TEXTAREA></td>
            <td><input type="text" name="newqty" style="HEIGHT: 50px; WIDTH: 150px"></td>
            <td><input type="text" name="newuom" style="HEIGHT: 50px; WIDTH: 150px"</td>
            <td><input type="text" name="newsprice" style="HEIGHT: 50px; WIDTH: 150px"</td>
            <td><input type="text" name="newsamount" style="HEIGHT: 50px; WIDTH: 150px"></td>
        ';
    }
?>

thanks a lot