var fDesc=new Array(); fDesc[0] = "Pythagorean Theorem is a text-based program that uses the formula A2 B2 = C2 to calculate the length of any side of a right triangle, provided you enter the other two. However, you must first specify whether you want to find the length of the hypotenuse (C) or a leg (A or B)."; 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 = ''; } }