var fDesc=new Array(); fDesc[0] = "Mathematics v10 is a free program that aims to teach kids some elementary mathematics. It includes over 300 topics like Mathematical Rules, Powers, Geometry, Simplifying, Equations, etc. All the topics are arranged in categories. There is an equation editor below each topic. We can also change the values given in example problems, and the program automatically changes the results."; 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 = ''; } }