Accessing substitution variables in static uploaded javascript file

Question

Hi there,
I just created variables and a pageinit function in my page header and try to access these variables (Flow_Id, Page_Id etc) within a js-file I uploaded into workspace static files.
I try to use them within an URL ( e.g. "f?p="+ Flow_Id + ":100:" + Session_Id ), but they are -undefined- and thus lead to a 404-Page!
Here is the code:
onload="pageinit()"             //in page html body attribute
//and the following code in the html header
<script type="text/javascript">
<!--
var Flow_Id; // application id
var Page_Id; // page id
var Session_Id; // session id
var Request; // request value
function pageinit(){
Flow_Id = html_GetElement('pFlowId').value; // application id
Page_Id = html_GetElement('pFlowStepId').value; // page id
Session_Id = html_GetElement('pInstance').value; // session id
Request = html_GetElement('pRequest').value; // request value
//-->
</script>Can someone please point me to the right direction!?
Thank you very much.
Regards
Johnny

Answer 1

Hi Paul,
I tried with IE 8 now and could at least find out now, which lines of code are responsible for the error:
addmenu(menu=[                    
"mainmenu",                    
69,                         
153,                         
1,                         
style1,                         
1,                         
"left",                         
1,                          
0,                         
,"Home","f?p=" + $v('pFlowId') + ":100:" + $v('pInstance'),,"",1 // "Description Text", "URL", "Alternate URL", "Status", "Separator Bar"
,"Tab2","show-menu=list01","tab2.html","",1
,"Tab3","f?p=300:1:","tab3.html","",1
,"Tab4","show-menu=list04","tab4.html","",1
])It must be the way I try to create the first URL (for Home) I already mentioned, because if I hard-code the URL, it works without errors.
I could hard-code the URL, but then I always get a new session-id. So, at least I need to find a way of accessing the current session-id here.
As mentioned before, I also tried to set global variables within a javacript function in the page header and assigning the current values for the session and app-id and reference these variables within the js-file I uploaded to the static files. But that did not work either. These variables were undefined.
I guess they were undefined because at the time when the function was processed the variable might not have been set yet.
But I followed exactly the solution Carl Backstrom mentioned in some of his posts some years ago. God bless him.
I am not a javascript expert, so maybe you got a hint for me!?
Thanks again for your support.
Johnny