var fDesc=new Array(); fDesc[0] = "This physics software title contains 105 original problems, several test generators, a great study guide, and other useful utilities. This software shows exactly the quality of the six physics modules we have designed. If you like this program, then you will be enthusiastic to get the other modules for the benefit of your students. These modules are efficient and motivating to help physics students become good problems solvers."; 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 = ''; } }