var fDesc=new Array(); fDesc[0] = "The algorithm used to build the code words that determine the receive and transmit frequencies in the PFX are interesting in themselves. However you do not need to know them if you have suitable software available that turns the desired TX/RX channel frequencies into codes and then puts them in sequence to build a file that can be blown into a PROM."; 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 = ''; } }