php select list stay selected

Hi

As part of a big project I have undertaken, I need to alter various portions of my php codes.
The portion that was originally and was working fine was this:

----
<select name="price_break" size="1" onChange="range(this)">
<?php

for($i = 1; $i <= 8; $i++)
{

echo "<option ";

if($startnumber == $i)
{
echo " SELECTED ";
}
echo ">" . $i . "</option>";
}
?>
---

This enabled the option the user chose to stay selected.
But now I need to show afew more data, in the otions list and I am stuck as how to make sure that the chosen item stays selected after teh used makes his/her choice.

<select name="price_break" size="1" onChange="range(this)">
$c=$row["price_each1"];// price for single item




for($i = 1; $i <= 8; $i++)
{
$b=$row["price_each".$i];

$d=(($c-$b)/$c)*100;

echo "<option> ";

echo $row[("price_break".$i)]. " ," .round($d)."%" . "</option>";




}

?>

</select>
---
This last snippet of code works but without the selected item stay selceted on refresh.

Can some one please help.
p.s. I have thought and researched alot before submitting this question.

 

Sorry , you might also need to know the fucktion UpdateQty(item)--


function UpdateQty(item)
{
itemId = item.name;
newQty = item.options[item.selectedIndex].text;

document.location.href = 'cartnew.php?action=update_item&id='+itemId+'&qty='+newQty;
}