Hello i have a page called Buy.html the main focus on the page is the form. My website allows people to buy textbooks from one another. I have a database that keeps track of all the textbooks.

Here is the main code for the page:
Code:
<div align="center">
	<table border="0" width="650" bgcolor="#FFFFFF">
		<tr>
			<td>&nbsp;</td>
			<td>
<!--Page below-->
<p align="center"><font size=5><b>Buy</b></font></p>
<br />
<br />
<div>
<form>
<b>Province</b>: <input type="text"></input>
<br />
<b>City</b>: <input type="text"></input>
<br />
<b>School</b>: <input type="text"></input> <b>Campus</b>: <input type="text"></input>
<br />
<b>Grade</b>: <input type="text"></input> <br /><br />
<input type="radio" Name= "ByGrade_Radio" /> Pick all text books for Grade. <br />
<input type="radio" Name= "ByCourse_Radio" /> Pick all text books by Course.

</form> 
</div>
<!--Page Ends-->

			<p>&nbsp;</td>
			<td>&nbsp;</td>
		</tr>
	</table>
</div>
I want it so when the user gets to the two radio buttons and choses between them some php code will execute. For example i want it so when the user selects the ByGrade_Radio radio button checkboxes will start to be listed for each textbook found in the database with the matching grade.

As well since the php will be creating these checkboxes i need to be able to retrieve whether a checkbox is checked or not using $_POST, so i may process the input since it is a form.

The major thing i am not sure about is how i will retrieve which checkbox is checked since the checkboxes are being generated from the mySQL database.

Is this possible? If not, does anyone have other suggestions/alternates...