How to generate page flow diagram without ApexLib?

Hi,
I would like to generate a page flow diagram. ApexLib does this wonderfully, but on my Oracle server environment I would prefer to stick to standard APEX and would like to avoid any none-standard Oracle packages or tools.
Is there any other way to do this?
Regards, Tamas

I tried using useBean inside the Jsp for this.
But following error comes:
OracleJSP error: oracle.jsp.parse.JavaCodeException: Line # 13, oracle.jsp.parse.JspParseTagExpression@102e37e
Error: Java code in jsp source files is not allowed in ojsp.next mode.
Please explain why?
How can set POST request params when calling to an external servlet?

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