function findPos (obj)
{
	var curleft = curtop = 0;
	
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	
	return [curleft,curtop];
}


function display_menu (parent, named)
{
	var menu_element = document.getElementById(named);
	
	vraag1.style.display = "none";
	vraag2.style.display = "none";
	vraag3.style.display = "none";
	vraag4.style.display = "none";
	vraag5.style.display = "none";
	vraag6.style.display = "none";
	vraag7.style.display = "none";
	vraag8.style.display = "none";
	vraag9.style.display = "none";
	vraag10.style.display = "none";
	
	menu_element.style.display = "";
	
	var placement = findPos(parent);
	
	//menu_element.style.left = (placement[0] - 506) + "px";
	//menu_element.style.top = (placement[1] - 3) + "px";
}


function hide_menu (named)
{
	var menu_element = document.getElementById(named);
	menu_element.style.display = "none";
}