var fDesc=new Array(); fDesc[0] = "The x-ray apparatus registers the pulse rates as a function of the angular positions of the target and the sensor. The software provides a graphical representation of these pulse rates as a function of the target angle, as well as suitable evaluation functions for determining Planck's constant h and verifying Moseley's law."; 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 = ''; } }