var fDesc=new Array(); fDesc[0] = "Ohmmeter Challenge is designed to help you teach students to analyze wiring and troubleshoot circuits using digital ohmmeters. Activities teach students to find shorted and open circuits in wiring. Troubleshooting circuits consisting of wiring, resistors, lamps, relays, coils, diodes, switches and PC boards are included. Each activity consists of randomly selected parameters and components."; 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 = ''; } }