function doTracking(f) {
	f = document.forms[f];
	t = f.trackit.value;
	if (t == "") {
		return false;
	}
	for (var i = 0; i < f.carrier.length; i++) {
		if (f.carrier[i].checked) {
			switch (f.carrier[i].value) {
                case ('UPS'):
                    window.open("http://wwwapps.ups.com/etracking/tracking.cgi?tracknums_displayed=1&TypeOfInquiryNumber=T&HTMLVersion=4.0&InquiryNumber1="+t, "_blank");
                	break;
                case ('FDX'):
                    window.open("http://fedex.com/Tracking/Detail?ftc_start_url=&totalPieceNum=&backTo=&template_type=print&cntry_code=us&language=english&pieceNum=&trackNum="+t, "_blank");
                	break;
                case ('USPS'):
					window.open("http://www.usps.com/shipping/trackandconfirm.htm?from=home&page=0035trackandconfirm&strOrigTrackNum="+t, "_blank");
                	break;
                case ('ABX'):
                    window.open("http://track.dhl-usa.com/TrackByNbr.asp?ShipmentNumber="+t, "_blank");
	                break;
			}
		}
	}
	return false;
}