var fDesc=new Array(); fDesc[0] = "Whole Number Arithmetic is an educational software program to help anyone learn increasingly difficult whole number arithmetic skills. It features individual placement and pacing, tutorial help, independent practice, visual tutorial aids, and structured progression through difficulty levels. Math Skill Builders: Whole Number Arithmetic provides record keeping, automatic progress tracking, and can be customized for individual learning needs."; 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 = ''; } }