var fDesc=new Array(); fDesc[0] = "The Population Analysis System (PAS) consists of a series of microcomputer programs designed to help you construct models and analyze the dynamics of populations of organisms inhabiting variable environments. To run the programs in Windows, use Windows Explorer to locate the executable file PAS.EXE in the PAS folder and double click on it."; 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 = ''; } }