function toggle(id){
	ul = 'ul_' + id;
	img = 'img_' + id;
	ulElement = document.getElementById(ul);
	imgElement = document.getElementById(img);
	if (ulElement){
	        if (ulElement.className == 'closed'){
	                ulElement.className = 'open';
	                imgElement.src = 'images/opened.gif';
	                }else{
	                ulElement.className = 'closed';
	                imgElement.src = 'images/closed.gif';
	                }
	        }
}

function togglepercentiles(id){
	ul = 'ul_' + id;
	img = 'img_' + id;
	ulElement = document.getElementById(ul);
	imgElement = document.getElementById(img);
	if (ulElement){
	        if (ulElement.className == 'closed'){
	                ulElement.className = 'open';
	                imgElement.src = 'images/opened.gif';
	                }else{
	                ulElement.className = 'closed';
	                imgElement.src = 'images/closed.gif';
	                }
	        }
}