function printerFriendly() {
	queryString = location.search.replace('pf=0','');
	queryString = queryString.replace(/&$/,'');
	window.location.href = (queryString.length>1)?queryString+'&pf=1':'?pf=1';
}
function printerNonFriendly() {
	window.location.href = location.search.replace('pf=1','pf=0');
}