Extra caution is recommended when installing recently uploaded/updated scripts (read more)
Be sure you trust any scripts you install
Yahoo Mail Ad and Sidepan Removal - VikySaran
removes the ads Motty Katan(c) Beta is Supported too. 06-02-2006 last updated 16-09-2007
You could comment on this script if you were logged in.

login to vote
Since I moved to Vista home premium I could not use any of these to get any relief from all that space...I think they way overdid it or I would put up with it.. but now, even with Vista, I have this and my browser back to reading email.... this works great....
login to vote
Now there is an advertisement TD on the far right, which can be removed with:
// Remove ad on the far right GM_addStyle("td#sky_ad { visibility:hidden;display:none;}");To also remove it from the Yahoo! Calendar, I could only come up with the next code (in a separate script):
//Remove ad on the far right for Calendar ad_td = document.getElementById('daydataview').getElementsByTagName('table')[2].parentNode; ad_td.style.visibility = "hidden;"; ad_td.style.display = "none;";login to vote
it good working for me