function ToggleExchangeLink(obj) 
        {
              var exchangeLinkCurrent = document.getElementById(obj);
              if ( exchangeLinkCurrent.style.display != 'none' ) {
                    exchangeLinkCurrent.style.display = 'none';
              }
              else {
                    exchangeLinkCurrent.style.display = '';
              }
        }

        function changelink(elm) {
            if ( 
            
                elm.style.background != 'url(http://vmsr090003:12948/Style%20Library/Images/course-section-open-bg.png) no-repeat right center' && elm.style.background != 'transparent url(http://vmsr090003:12948/Style%20Library/Images/course-section-open-bg.png) no-repeat scroll right center') {
               elm.style.background = 'transparent url(http://vmsr090003:12948/Style%20Library/Images/course-section-open-bg.png) no-repeat center right';
              }
              else {
                    elm.style.background = 'transparent url(http://vmsr090003:12948/Style%20Library/Images/course-section-closed-bg.png) no-repeat center right';
              }

        }