var fDesc=new Array(); fDesc[0] = "OSLO-EDU is a free Windows program with a reduced number of features compared to OSLO Light. Please see Differences Between the EDU and Light Editions of OSLO for a detailed comparison. It also restricts you to working with systems that have up to 10 surfaces. Although OSLO-EDU does not include all the capabilities of OSLO Light, Standard or Premium, it does give you optical design power that exceeds many commercial programs. OSLO-EDU gives you the basic ability to lay out, edit, optimize, analyze, tolerance, and save a wide range of optical systems. OSLO-EDU is perfectly tailored for educational use."; 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 = ''; } }