Dynamically change the name of a tab

From here: http://dmcrm.blogspot.com/2008/06/dynamically-changing-name-of-tab.html

Sets tab 4 name to name of primary contact:

var title = crmForm.all.primarycontactid.DataValue;

if(title != null)
{
document.all.tab4Tab.innerText = title[0].name;
}