function showHideAnswer()
        {
                var numericID = this.id.replace(/[^\d]/g,'');
                var obj = document.getElementById('a' + numericID);
                if(obj.style.display=='block'){
                        obj.style.display='none';
                }else{
                        obj.style.display='block';
                }
        }


        function initShowHideContent()
        {
                var divs = document.getElementsByTagName('DIV');
                for(var no=0;no<divs.length;no++){
                        if(divs[no].className=='question'){
                                divs[no].onclick = showHideAnswer;
                        }

                }
        }

        window.onload = initShowHideContent;