I am here to give u question. that is beyond exception but i think somebody will have answer for this.
Question: Once user clicks an anchor tag
Where is this anchor being displayed? In general, the link will be opened with the same program that is displaying the anchor. If not, it will launch whatever program is registered in the user's system to handle HTML files. You cannot force the user's system to use any specific browser (what happens if that browser isn't installed)?