var fDesc=new Array(); fDesc[0] = "Use XLC add-in for Excel to display cell formulas as easily readable mathematical equations. It turns Excel into an engineer's calculation pad automatically presenting the calculation method and making verification of the calculation simple. It is an essential tool for all engineers, teachers and students and it works with Excel 2000, 2003, 2007 and 2010."; 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 = ''; } }