I am creating .PNG graphs for work. I use a form to select a date range, when the button is clicked, it passes the value to a javascript that does a redirect passing the values to the same page (GET request) with an action set that activates the graph generation and this works great. (this is done to prevent the constant request to resend data from a regular form post when hitting the back button). But the graph does not show up unless I hit refresh. It is always one page behind. I have no idea why. Any suggestions? Is it an html cache issue? I have no-cache specified.
Thanks.
