var changing_thumbs = new Array();
function changeThumb(index, i, num_thumbs, path)
{
	if (changing_thumbs[index])
	{
		hidden_image_id = (i + 1) % num_thumbs;
		if(i == 0)
			i++;	
		if (hidden_image_id == 0)
			hidden_image_id++;
		$(index).src = path + "-" + i + ".jpg";
		$("hidden_image").src = path + "-" + hidden_image_id + ".jpg";
		
		i = i % num_thumbs;
		i++;
		setTimeout("changeThumb('" + index + "'," + i + ", " + num_thumbs + ", '" + path + "')", 600);
	}
}	
function startThumbChange(index, num_thumbs, path)
{	
	changing_thumbs[index] = true;
	
	changeThumb(index, 1, num_thumbs, path);
}
function endThumbChange(index, path)
{
	changing_thumbs[index] = false;
	document.getElementById(index).src = path;
}

function showHideDiv(vidId, val){
	if (val == 1){
		document.getElementById('know'+vidId).style.display='block';
	}else{
		document.getElementById('know'+vidId).style.display='none';
	}
}