var interval;var startPos=0;var finishPos=300;var scrollspeed = 5;
function scrollerdown(){
	if(startPos < finishPos)
	{
		startPos += 10;
		window.scrollTo(0,startPos);
	}
	else
	{
		clearInterval(interval);
		startPos = finishPos;
	};
}
function scrollerup(){
	if(startPos > finishPos)
	{
		startPos -= 10;
		window.scrollTo(0,startPos);
	}
	else
	{
		clearInterval(interval);
		startPos = finishPos;
	};
	if(startPos == finishPos)YAHOO.util.Dom.addClass('comments-box', 'hidden');
}

var removeLogin = function() { 
if (finishPos == 0) finishPos = 300;
if(YAHOO.util.Dom.hasClass('comments-box', 'hidden')){YAHOO.util.Dom.removeClass('comments-box', 'hidden');interval = setInterval("scrollerdown()",scrollspeed);} 
else {finishPos=0;interval = setInterval("scrollerup()",scrollspeed);}
}; 
YAHOO.util.Event.on('show', 'click',removeLogin);