How to make a custom popup window conditional

Question

I reviewed the how-to doc to create custom popup pages. It uses a javascript function in the HTML Header of the popup page:
<script language="JavaScript" type="text/javascript">
function callMyPopup (formItem1,formItem2,formItem3) {
var formVal1 = document.getElementById(formItem1).value;
var formVal2 = document.getElementById(formItem2).value;
var formVal3 = document.getElementById(formItem3).value;
var url;
url = 'f?p=&APP_ID.:2:&APP_SESSION.::::P2_ENAME,P2_JOB,P2_SAL:' + formVal1 + ',' + formVal2 + ',' + formVal3 ;
w = open(url,"winLov","Scrollbars=1,resizable=1,width=800,height=600");
if (w.opener == null)
w.opener = self;
w.focus();
</script>
I don't know javascript -- is there a way to have the page be a popup page conditionally based on the page it's invoked from? I want to use an existing report page that's a tab page as a popup page with a conditional column link that is displayed based on if it was invoked from a specific page that's used for the pass back values. Is this all possible?

Answer 1

Hi Denes,
Thanks so much for your help. I have everything working, it's great! I'm trying to enhance this by having the Select column in my popup page (P57) be conditionally displayed based on the page it was invoked from. I've tried a couple different things. One is I have a page item on the popup page that gets set to the page it's invoked from by setting the page item in the href defined in the Post Element Text for the link in the calling page. What I can't figure out now is how to set it to null after the user selects a value from the popup page, or if they close the window without selecting a value. To make it work in all cases, the P57_FROM_PAGE page item needs to be set to null by the calling page.
Can you give me some pointers on how to do this?
Karen