Redirection and pass value to another page?

I have some problems about my project:

The user can add or remove symbols from their list, and can see
the list result immediately on the same page once they did add or
remove. So my Form Action has to be $PHP_SELF. But I want to
link to another page "trading.php" and pass the value
of $symbol to it once the user click the "trade" image button.

1. How to link to another page?
2. How to pass the value of $symbol?
Thanks!


------monitor.php------

echo("<form action="".$_SERVER['$PHP_SELF']."" method="post">");
echo("<table>");

while ($rec = mysql_fetch_array($result)){
....
$symbol=$rec["symbol"];
echo("<tr><td>".$symbol."</td>");
echo("<td><input type="image" src="arrow1.gif" name="trade" value="".$rec["symbol"].""></form></td><tr>");
}

echo("</table>");

echo("<BR>Symbol:
<input type="text" name="symbol">
<input type="submit" name="addstock" value="Add Stock">
<input type="submit" name="removestock" value="Remove Stock">
");
echo("</form>");

If I understand your question correctly, then you either need to include trading.php on your page as an iframe or similar, or write the data to a file which trading.php will then retrieve when it loads

u can do it in several ways:

1) u can use javascript to change action of a <form> tag when a user clicks "trade" button

2) or have a complitely diferent <form> tag for a trade button, and again use javascript to copy $symbol value to a hidden field on a second form

3) or use what Nimco said...