trying to do something simple

I am trying to make a javascript code were when the user clicks a botton, it adds to the amount $myamount
here is what I have so far, but it completely dosn't work. (im new to javascript)

 

var myAmount = 0;

<INPUT TYPE="button" VALUE="CLICK!"
onClick="myAmount++">

 

I would also like to get the number of times clicked by php. how is that possible?

 

What do you mean?

 

every time the button is hit, it counts up. then when the user wants, at a certain point (lets say after 5 clicks) they can click the "submit" botton. this will take then to a new php page, witch will inject SQL (it will rack up a feild by 5) but to do this, php needs to now how many times the button was clicked.

 

<?php
session_start();
$_SESSION['clicks']++;
if ($_SESSION['clicks'] >= 5)
	//do the dew

PHP: