Ok, so Im new to this and starting really simple, but heres my code:

<!DOCTYPE html>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js">
// $("#div1").load("details.php?date_1=31%2F1%2F1975&date_2=31%2F1%2F1985&submit=Submit" );
// $("#div1").load("details.php", {date_1:"31/1/1975", date_2:"31/1/1985"} );

<div id="div1"><h2>Let jQuery AJAX Change This Text</h2></div>
<button>Get External Content</button>


The 2 lines commented out, the first works, the second doesnt... I cant work out why?! Or how to make the second one work... Anyone?!