In the function you write a file "tap" which you never use subsequently. Instead you use a file "asap.log", which should be filled with the <stdout> of the function, but there is none, as the only possible output is redirected to "tap".
Your script contains severe syntax errors ("if" without a closing "fi") and can never have run the way you present it.
Look at any HTML-document and you will notice that it is clear text with a fixed structure and tags mixed with the text. Search the web for any HTML reference (there is an abundance of them) and most of them will not only explain the general structure of such an HTML file but also the meaning of every tag. Consult such a reference/introduction and write such a file using "print" (if you use ksh) or "echo" (if you use bash) or whatever output command your shell has - finished.