var fDesc=new Array(); fDesc[0] = "An interactive course written by Bill Phillips, author of the acclaimed textbook 'Discovering Electronics'. It explores electronic theory and design, moving from simple circuits through to complex real-life applications. You can follow the course all the way through or use the units individually. Each unit provides a compelling narrative supported by interactive animations, our unique simulations and exercises to ensure concepts have been understood."; 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 = ''; } }