function doValidationSS() {
	tform = document.forms['ShipmentStatus'];
	//validate that there is at least one purchase order number
	val_po1 = tform.Numbers.value;
	//alert("val_po1=" + val_po1 +"~");
	if (val_po1 == '') {
		alert('You must provide at least one PO, Bill of Lading, or Purchase order number')
		tform.Numbers.focus()
	} else {
		tform.submit()
	}
}  
function validateSS() {
	tform = document.forms['ShipmentStatus'];
	val_po1 = tform.Numbers.value;
	if (val_po1 == '') { 
		alert('You must provide at least one PO, Bill of Lading, or Purchase order number');
		tform.Numbers.focus();
		return;
	}  else {
		document.forms['ShipmentStatus'].submit();
	}
}