Mission Impossible?   Seventeen years on and the result that shocked Scottish Football still sends a shiver down the spine of Caley Thistle fans. Supercaleygoballistic...... you know how it goes, gets an airing every time these two clubs meet, especially in the Scottish Cup. At the time nobody thought it was possible. Inverness were being dismissed with contempt borne through ignorance. How could a mid-table first division side knock the mighty Celtic out of the Scottish Cup on th