function open_window(url,width,height) {
	window.open(url,'_blank','toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=yes,resizable=yes,width='+width+',height='+height+',top='+(window.screen.height/2 - height/2)+',left='+(window.screen.width/2 - width/2));
}
function replyTo(id)
{
	if (id==0) {
		document.getElementById('addComment').appendChild(document.getElementById('commentForm'));
	} else {
		document.getElementById('replyTo'+id).appendChild(document.getElementById('commentForm'));
	}
	document.getElementById('replyTo').value=id;
}