Cleaned up things a bit, added some <head> stuff to make the document valid, and added some CSS styling to get rid of all excess space:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang='en'>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=ISO-8859-1'>
<title>Citrus</title>
<style type="text/css">
#banner {
margin: 0;
padding: 0;
text-align: left;
}
#banner img {
bordern: none;
}
#myform {
margin: 0;
padding: 0;
}
#myform table {
margin: 0;
border-collapse: collapse;
border: solid 1px black;
}
#myform th, #myform td {
border: solid 1px black;
}
</style>
</head>
<body>
<div id="banner"><img src ="citrus_banner4.jpg" name="citrus_banner"
width="1480" height="140" alt="Citrus"></div>
<form name="myform" id="myform" method="post" action="receive-form.php">
<table>
<tr><td><b>Customer</b></td><td><b>Telephone</b></td><td><b>Oranges</b></td><td><b>Grapefruits</b></td><td><b>Tangerines</b></td><td><b>Variety</b></td><td><b>$Order</b></td><td><b>$Paid</b></td><td><b>$Owing</b></td><td><b>Picked Up</b></td><td><b>Comments</b></td>
<?php
$db = mysql_connect("localhost", "root","password");
mysql_select_db("citrus_fundraiser",$db);
$result = mysql_query("SELECT * FROM customers",$db);
$result2 = mysql_query("SELECT * FROM prices",$db);
if ($myrow = mysql_fetch_array($result)) {
$myrow2 = mysql_fetch_array($result2);
do {
$cn = sprintf("%s %s",$myrow["firstname"],$myrow["lastname"]);
$ordered = ($myrow["citrus1"]*$myrow2["citrus1_price"])+($myrow["citrus2"]*$myrow2["citrus2_price"])+($myrow["citrus3"]*$myrow2["citrus3_price"])+($myrow["citrus4"]*$myrow2["citrus4_price"]);
$owing = $ordered - $myrow["paid"];
$total_order = $myrow["citrus1"] + $myrow["citrus2"] + $myrow["citrus3"] + $myrow["citrus4"];
?>
<tr bgcolor='red'><td><input type="text" name="cn_a[]" value="<?php echo $cn?>"></td>
<td><input type ="text" size ="12" name="phone_a[]" value="<?php echo $myrow["phone"]?>"></td>
<td><input type ="text" size ="6" name="citrus1_a[]" value="<?php echo $myrow["citrus1"]?>"></td>
<td><input type ="text" size ="11" name="citrus2_a[]" value="<?php echo $myrow["citrus2"]?>"></td>
<td><input type ="text" size ="10" name="citrus3_a[]" value="<?php echo $myrow["citrus3"]?>"></td>
<td><input type ="text" size ="10" name="citrus4_a[]" value="<?php echo $myrow["citrus4"]?>"></td>
<?php printf("<td>%01.2f</td>", $ordered); ?>
<td><input type ="text" size="5" name="paid_a[]" value="<?php echo $myrow["paid"]?>"></td>
<?php printf("<td>%01.2f</td>", $owing);?>
<td><input type ="text" size="9" name="pickedup_a[]" value="<?php echo $myrow["pickedup"]?>"></td>
<td><input type ="text" size="25" name="comments_a[]" value="<?php echo $myrow["comments"]?>"></td></tr>
<?php
} while ($myrow = mysql_fetch_array($result));
}
?>
</table>
</form>
</body>
</html>