Hide "Cannot be blank" in InfoPath Services

In InfoPath form services, fields that have validation will display "Cannot be blank" message when hovered over the field. This can be annoying (very annoying:@). To disable this read this or change C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\TEMPLATE\LAYOUTS\INC\Core.js

change line from
objVisualizationDiv.style.display = "inline";
to
objVisualizationDiv.style.display = (strHelperName == "ErrorTip") ? "none" : "inline";


or comment out
border: 1px solid #B22828; background:. . .
with in .errorDiv section of ifsmain.css file in same foler

ref: read this

Thanks,