var fDesc=new Array(); fDesc[0] = "Algebra Vision is a piece of algebra educational software. About half of students learning algebra have difficulty making the conceptual leap from arithmetic. Algebra Vision helps students by presenting algebra in a more tangible light. It provides a playground where students can develop algebraic problem solving strategies without the tediousness of pen and paper."; 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 = ''; } }