var fDesc=new Array(); fDesc[0] = "Two Equations - Two Unknowns solves two linear algebraic equations for two unknowns. Enter the coefficients and see a graphical solution and the solution computed using Cramer's Rule. Two Equations - Two Unknowns will run under any Microsoft Windows operating system."; 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 = ''; } }