var fDesc=new Array(); fDesc[0] = "Try it out and help your kids to learn math in an easy and fun way. Several levels of classic arcade-style puzzle or tetris-style game are riddled with many mathematical questions. The only way to get across the game is to solve them without mistakes. If an incorrect answer is received the tutoring module will make sure that you understand how to solve the problem. The program is free to download."; 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 = ''; } }