Change the default filter in activities in crm 3.0

We needed to change the default activity history filter as a customer asked us to do that. I searched the net to find some answers and there were 2 very good articles regarding this. i have pasted the links below.

http://www.stunnware.com/crm2/topic.aspx?id=js11
http://ts2community.com/blogs/larrylentz/archive/2008/12/19/changing-the-default-activities-filter-on-view.aspx

Change the for title and title bar in CRM 3.0 forms

I have given below the javascripts that needs to be used to change this.

var doc = document.getElementsByTagName('td');
for (var i = 0; i < doc.length; i++)
{
if(doc[i].className == "formTitle")
{
var header = doc[i].innerText;
strName=crmForm.all.name.DataValue;
strTitle=crmForm.all.titleid.DataValue[0].name;
header = strTitle +". "+ strName ;
doc[i].innerText = "Member : " + header;
document.title ="Member : " + header;
}
}

This scripts will change both the form title and CRM form title bar.
i was helped by this post.
http://robbakkers.blogspot.com/2006/03/update-header-information.html