var fDesc=new Array(); fDesc[0] = "SigniFigures shows how to identify the significant figures in a given number and provides a few simple rules for expressing a given number correct to a specified number of significant figures. Simple mental exercises at the end of each session help students to remember the rules learnt.

SigniFigures is capable of generating thousands of numbers for drills to ensure that the student masters what he has learnt."; 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 = ''; } }