var fDesc=new Array(); fDesc[0] = "Intersection Builder is a user-friendly add-on for Civil 3D that makes it easier to perform grading at roadway intersections. In Civil 3D, corridor models can be developed quite easily to model even a complex roadway cross section. The process becomes more difficult at intersections, however. Grading an intersection using a corridor model usually requires a separate alignment and profile for each curb return."; 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 = ''; } }