sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);





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('P');
	for(var no=0;no<divs.length;no++){
		if(divs[no].className=='question'){
			divs[no].onclick = showHideAnswer;
		}	
		
	}	
}

window.onload = initShowHideContent;