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I want to alter and manipulate the behavior and action of continue button on new contribution page through extension, I want to do some additional tasks with that button through my extension like sending email etc.
What is the best way to accomplish this task?
you can use hook_civicrm_postProcess or hook_civicrm_post
which ever you need based on your requirement below is the link for more reference http://wiki.civicrm.org/confluence/display/CRMDOC/Hook+Reference
