Divide data for form?

[robhalv1]

I am currently pulling a 10 digit number form a database and propulating a form.

I have recently changed the form to 3 input boxes and can't figure out how to split the data (i.e. xxx, xxx, xxxx).

Here is snippet from my current code:

function loadModalPromo()
{
	modalpromo = new Boxy("<?php loadPromoModalContent(); ?>", {title: "I do not have a Promo Code", modal: false, closeable: true, show: false });
	
	$("#mphavecontact").click(function() {
		modalpromo.hide();
	});
	
	$("#mpnotcontact").click(function() {
		$("#mpoptionform").hide();
		$("#mpgettingpromo").show();
		$.ajax({
		   type: "POST",
		   url: "yhfiles/ajaxgetpromo.php",
		   data: "key=" + "<?php echo $_SESSION["ajaxget_promo_key"]; ?>",
		   success: function(msg){
			 if(msg.length == 10)
			 {
				$("#logpromo").val(msg);
			 }
			 else
			 {
				 alert("Error in retrieving the promo code. Please contact the administrator.");
			 }
		   },
		   complete: function(msg){
			   $("#mpoptionform").show();
			   $("#mpgettingpromo").hide();
			   modalpromo.hide();
		   }
		 });
		 
		
	});
}

Any help would be appreciated.

[johny10151981]

if you do it with php

$value="1234567890";
$part1=substr($value,0,3);
$part2=substr($value,3,3);
$part2=substr($value,6,4);

want to do with javascript

var value="1234567890";
var part1=value.substr(0,3);
var part2=value.substr(3,3);
var part3=value.substr(6,4);