var fDesc=new Array(); fDesc[0] = "Free software for option traders. You can : calculate the value of put and call options (The Black-Scholes Option Pricing Model, calculate option greeks (delta, vega, gamma, theta, see graph of option position (long call option or long put option). Calculate implied volatility."; 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 = ''; } }