var fDesc=new Array(); fDesc[0] = "The Visible Virtual Machine (VVM) is a visual based, virtual computing environment that allows the student user to create a program, and then to actually view the execution of the program within the (virtual) CPU of the VVM machine. The system is based on the well-known Little Man Computer (LMC) model of computing."; 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 = ''; } }