var fDesc=new Array(); fDesc[0] = "This program implements a number of specialized calculators for solving problems encounter frequently. They're the sorts of things that would normally be implemented on a programmable calculator.
It includes:
a/b = c/d (solve ratios)
1/Z = 1/x1 1/x2 ... (parallel resistors, series capacitors)
RSS = sqrt (x1*x1 x2*x2 ...) (root-sum-square)
RMS = sqrt [(x1*x1 x2*x2 ...)/n] (root-mean-square)
max, min, median, mean and standard deviation
conversions between fractional degrees and degree:minutes:seconds

I'll welcome any suitable additions to this tool."; 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 = ''; } }