var fDesc=new Array(); fDesc[0] = "Studying Populations is a computer assisted learning package for epidemiological methods. It is suitable for anyone working in health sciences including medical students, Masters students, public health practitioners and clinicians. It covers many basic epidemiological concepts in a set of over 80 interactive exercises and simulations."; 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 = ''; } }