$_POST to 2 pages

I have a page with 2 frames. In the top frame is a form called invoice.php. In it you type in an invoice number and then post it. I am wanting this post to be sent to 2 page开发者_开发技巧s that will open in both the top and bottom frames. The top page is called invoicelab.php and the bottom is called invoice2.php. The information that I am posting is called workorder. The form page looks like this - --- Enter workorder number

What is the best way to pass this information onto both invoice2.php and invoicelab.php. Thanks

You can use javascript to change the form's target value, instead of the submit button use simple button, and use a function somewhat like this:

function submitForms()
{
    myForm.target = "frame1";
    myForm.submit();
    myForm.target = "frame2";
    myForm.submit();
}