function change_img(img, fn) {
		img.src = "/images/" + fn;
	}
	
	
	function show_hide(id, state) {
		document.getElementById(id).style.display = state;
	}
	
	function showhidemenu(eleID) {
	   elem = document.getElementById(eleID);
	   if (elem.style.display=="block") {elem.style.display="none";} 
	   else { elem.style.display="block";} 
	}
	
	function showmenu(eleID) {
		elem = document.getElementById(eleID);
		elem.style.display="block";
	}

	function show_desc(div, showmore) {
	   document.getElementById(div).style.height="auto";
	   document.getElementById(showmore).style.display="none";
	}