what if jquery toggle doesn't work?

alternative is to use plain javascript, doesn't behave as nice but it works.

function toggleCourseDescriptions(conditioner) {

            var targetCtrl = document.getElementById("divCourseDescription");
            var triggerControl = document.getElementById("aToggleCourseDescription");


            if (targetCtrl.style.display == 'none') {
                targetCtrl.style.display = null;
            } else {
                targetCtrl.style.display = 'none';
            }

            if (triggerControl.text == "-") {
                triggerControl.text = "+";
            } else {
                triggerControl.text = "-";
            }
        }