Swarnava, if you are going to copy someone elses post, at least put it in a quote...

romain33, welcome to the forum
I can't see an alert in the form of JS:ScriptIP-inf [Trj], only a block by the network shield. This would mean that it needs reporting as a false positive to avast to allow them to review the detection.
It can be done as above, and/or the information can be sent in an email to virus(at)avast.com with the subject of "False Positive".
You could also include a link to this thread when sending.
Scott