var fDesc=new Array(); fDesc[0] = "The Knarly Works program can make many "direct logic" deductions about which pieces have to be placed where, but will frequently reach a point where it has to use "what-if logic" to proceed. This doesn't mean that you will need to use what-if logic all the times that the computer does, and it doesn't mean that you will have to use as many what-if deductions as the computer does to solve a given puzzle. However, the number of what-ifs required by the PROGRAM to solve a puzzle can be a ROUGH indicator of the difficulty of the puzzle."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }