Avast detected a Trojan virus on our website

Hi Can anyone help … our website www.crispins-removals.co.uk when opened shows that a Trojan virus has been detected.
We have had our web designers clean the site twice now and they can not detect any virus.
I have McAfee and Avast installed on my computer and only Avast picks up the Trojan.
A friend who has some knowledge of IT said possibly Avast is misidentifying the Trojan as Mcafee does not detect it and friends who don’t have avast don’t get this Trojan pop up on their screens.
Can anyone shed some light on this? As our stomers with Avast get this pop up and are very unhappy :‘( :’(
Any advice would be appreciated!! …

I get no detection from avast! on your site.
Please post a screenshot of the warning.

Also no detection on my end.

It has just happened again today, I have a screen shot, but it doesn’t seem to give me an option on here to upload a jpeg image from my desktop.

The error code is

URL: http:www.crispins-removals.co.uk
Process:C:\Program Files (x86)\Internet Explorer…
HTML:lframe-BAV [Trj]

Does the alert occur in your other browsers or is this IE specific?

~!Donovan

Click on Attachments and other options below the answering box to attach the picture.