var fDesc=new Array(); fDesc[0] = "TWODAN is a popular and versatile analytic ground-water flow model for Windows. TWODAN has a suite of advanced analytic modeling features that allow you to model everything from a single well in a uniform flow field to complex remediation schemes with numerous wells, barriers, surface waters, and heterogeneities."; 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 = ''; } }