JQuery :: Submitting Information Based On Which Form Was Clicked

I've been doing PHP for a couple months, but just came across jquery today. I'm making a wedding-registry-style wishlist site for the holidays, and one of my pages is a list of all the items on your wishlist for you to modify.

Here is my jquery script, which I had learned from a tutorial:
<script type="text/javascript">
$(function() {
$(".submit1").click(function() {
var item_name = $("#item_name").val();
var item_notes = $("#item_notes").val();
var imgid = $("#imgid").val();
var price = $("#item_price").val(); .....
var dataString = 'item_name='+ item_name + '&imgid=' + imgid + '&price=' + price + '&item_notes=' + item_notes;

$.ajax({
type: "POST",
url: "edit.php",
data: dataString,
success: function(){
$('.success').fadeIn(500).fadeOut(500);
}});
return false;
});
});
</script>

My forms are structured like so:
// PHP WHILE STATEMENT
// Retrieve data about item
<form>
<input type="hidden" name="imgid" id="imgid" value="<?=$imgid?>">
<input name="item_name" type="text" id="item_name" value="<?=$item_name?>" />
<input name="item_notes" type="text" id="item_notes" value="<?=$item_notes?>" />
<input name="item_price" type="text" id="item_price" value="<?=$price?>" />
<input type="image" class="submit1" src="images/edit_item.png" border="0" />
<span class="success" style="display:none">Item updated!</span>
</form>
// END WHILE STATEMENT

Now, the problem is obviously that when this HTML code gets repeated, all the forms have the same input IDs. I tried adding numbers to the form using php, so it would be something like "item_name1", "item_name2", "item_name3", etc depending on the form, but then I realized I don't know how to pass parameters into the jquery function.

Is there any way to do this? So that it's something like...
$(function() {
$(".submit1").click(function() {
// Find parent form (which would have the ID "1", "2", "3", etc.)
// var id = parent form ID
// Get info from "item_name1" if form "1" was submitted
// Get info from "item_name2" if form "2" was submitted
// Etc.
var item_name = $("#item_name"+id).val();
var item_notes = $("#item_notes"+id).val();
var imgid = $("#imgid"+id).val();
var price = $("#item_price"+id).val();
// declare datastring
// ajax
return false;
});
});