What are your trying to do with this? The <a> tag is used to link hypertext, not Perl code. I can take some guesses at what you are trying to do, but i recommend that you instead rephrase your question/tell us why you want to do this/give some sample code or sample input/output. Then we can help more. :)

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)