var fDesc=new Array(); fDesc[0] = "The ability to predict the performance of a sound system is indispensable to system designers in every application. Meyer Sound combined rigorous scientific techniques and careful, high-resolution measurements with direct input from leading designers and years of experience to produce the MAPP Online Pro acoustical prediction program."; 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 = ''; } }