rainborick - 9:43 pm on May 10, 2012 (gmt 0)

You could certainly use JavaScript to set the alt and title attributes of these tags to '', so the vast majority of users wouldn't see them. Install an onload() function that collects all of the <img> tags with document.getElementsByTagName('img'), and for each element in the resulting array, check if the alt's and title's == "Picture" and if so, set them to ''.

Beyond that, the only solution would be to dig into the CMS' scripts and change the relevant code.