how to prevent jerk in chat application - vb.net

Question

there is jerking in text in my chat application (particularly in IE) as i have set timer for refresh the content for each one second how to prevent this

Answer 1

Do you know how to use AJAX or are you refreshing the entire page?

Answer 2

if using ajax, rather than "replacing" the content in the div, "append" to it

eg. with jquery, rather than

$('#convo').html('<p>Msg1</p><p>Msg2</p><p>Msg3</p>');

do

$('#convo').append('<p>Msg1</p>');
$('#convo').append('<p>Msg2</p>');
$('#convo').append('<p>Msg3</p>');