var fDesc=new Array(); fDesc[0] = "The BBC Science simulations software provides a unique opportunity for primary school students to conduct a series of virtual scientific experiments covering several key areas of the primary science curriculum. The simulations are closely based on the BBC Science clips TV series and follow the QCA Schemes of work for Science. Each simulation provides students with the opportunity to select variables, control time and view the results of their experiments as animations and/or dynamically generated tables and graphs that chart the results of each combination of variables over time."; 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 = ''; } }