var fDesc=new Array(); fDesc[0] = "Brainwave stimulators use light and sometimes sound, in order to induce your brainwaves and change the brainwaves frequency. Doing that, by neuroscientists and others(people who want money), may change your mood, improve memory, imagination - your mental state. Some claim they even get into a sort of a hypnotic state."; 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 = ''; } }