I've done it now so I may as well post it...
Code:
 
var loc = '' + window.location;
var arrLoc = loc.split('/');
var strOut ='';
var strOutB = '';
for (var i=0; i < arrLoc.length; i++) 
{
	strOut += arrLoc[i] + '/'
	if(i>1){
		strOutB +='<a href="' + strOut + '"><b> ' + arrLoc[i] + '</b></a><b> > </b>' 	 
	}
}
strOutB = strOutB.substring(0,strOutB.length -6)
document.write("<small>")
document.write(strOutB)
document.write("</small><BR>")