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;