var fDesc=new Array(); fDesc[0] = "Nine computer based therapy procedures for creating convergence and divergence prismatic demands using 12 different anaglyphic targets with suppression controls. Random dot stereograms and 3D targets can also be used to build fusion skills as patient performance improves. The Single Target, Double Targets, and Smooth Vergence procedures can also be used to create vertical prismatic demands."; 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 = ''; } }