cannot pass variable value with confirmation script with type=image button

Hi,
I can get the confirmation script redirected to a page I want with the script bellow, but the variables I want to carry over do not pass. How do I solve this problem?

<script type="text/javascript">
<!--
	function confirmation() {
		var answer = confirm("Are you sure you want to delete the item?");
		if (answer){
			alert("Removing the item!");
			window.location = "delete.php";
			return true;
		} else {
			alert("Some items worth keeping!");
			return false;
		}
	}
//-->
</script>					
<form method='post'>
	<input type='hidden' name='id' value='<?php echo $row['id']; ?>' />
	<input type='hidden' name='name' value='<?php echo $row['name']; ?>' />
	<input type='image' src='images/delete.png' onclick='confirmation(); return false' title='delete item' />
</form>

Code (markup):

Thanks so much

 

Never mind, I can achieve what I want with the get method following this tutorial:
http://jamesowers.co.uk/javascript/303/javascript-confirm-box/

But why it takes much longer time to process the script with fewer line of codes?
I'm still sticking with the post method though.

 

I get it done with the post method. For those who struggle with this, use the onsubmit event to handle it.

 

I can't see any variable passed to caling script. You need to pass the variable while calling function itself. Let me know which variable exactly you wanted to pass, i can help you to write code for the same.

Sheetal