/* some code to highlight the current trick and to switch between different tricks */ /* which trick is currently highlighted*/ var current=0; /* do the higlighting */ function hl(num) { if(document.getElementById){ var i; for(i=0;i<14;i++){ if(document.getElementById("trick"+i)) document.getElementById("trick"+i).style.display = 'none'; } document.getElementById("trick"+num).style.display = 'block'; current=num; } } /* highlight the last trick, useful when a page is called the first time*/ function high_last(){ if(document.getElementById){ var i; for(i=13;i>=0;i--) { if(document.getElementById("trick"+i)) { hl(i); current=i; break; } } } } /* highlight the next trick */ function hl_next() { if(document.getElementById("trick"+(current+1))) hl(current+1); } /* highlight the previous trick */ function hl_prev() { if(document.getElementById("trick"+(current-1))) hl(current-1); }