var album_name_old = '';

function show_album(ev, album_name, album_width, album_height) {
		if(album_name_old != '') hide_album(album_name_old);
		MouseX = ev.clientX + document.body.scrollLeft;
		MouseY = ev.clientY + document.body.scrollTop;
		obj = document.getElementById(album_name);		
		//obj.style.top =  '50%';
		obj.style.top =  '95px';
		obj.style.left =  '50%';		
		//obj.style.marginTop = -(album_height/2);
    obj.style.marginLeft = -(album_width/2);
		obj.style.width = album_width;
		obj.style.height = album_height;
		obj.style.visibility = "visible";		
		album_name_old = album_name;
}

function hide_album(album_name) {
		document.getElementById(album_name).style.visibility="hidden"
}