var fDesc=new Array(); fDesc[0] = "A set of 12 mathematical programs, providing useful tools for students, teachers, and engineers. The Visual Probability program can be used to compute and graph probability density functions, cumulative distribution functions, etc. Visual Calculus helps you to calculate and graph limits, derivatives, 3D vectors, and other calculus-related data."; 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 = ''; } }