onLoading and onComplete Event Methods in JQuery

onLoading and onComplete Event Methods in JQuery

Hi All

I want to use jquery instead of prototype.js my current code in prototype.js is given below

pars += 'postId=' + postId;
pars += '&comment=' + comment;
pars += '&postauthor=' + postauthor;
var myAjax = new Ajax.Request(
url,
{
method: 'post',
parameters: pars,
onLoading: function(){
var successmsgDiv = $(successmsg);
successmsgDiv.style.display = "block";
successmsgDiv.innerHTML = '<img src="<?php echo site_url(); ?>/processing1.gif" BORDER="0" alt="processing" />';
$(buttonId).disabled = true;
},
onComplete: function(transport){
var successmsgDiv = $(successmsg);
successmsgDiv.update(transport.responseText).setStyle({display:'block'});
frmId.elements['txtcomment'].value = "";
var postDiv = $(postcommentdiv);
postDiv.style.display="none";
$(buttonId).disabled = false;
}
}
);

In the jquery documentation i got the replacement of onComplete that is success but i did not found what to use for onLoading event.

Any help or suggestion would be greatly appriciated.

Gaurav