This is a followup on a question I was asking here: Cropping images & SEOBasically, if I have something like this:    <a href=<Full_Res_Image>><img src=<Cropped_Image>></a>and Cropped_Image is blocked by robots.txt,Will Google still crawl to Full_Res_Image and index that in its web search as well as Google Images?If it does crawl to the full res image, how do I then set alt tags on the full res image?If these are not feasible, then do you have any pointers on how to show cropped images for user/page-load friendliness, while still having Google Images index the full res image and not the cropped image?P.S. The reason I want to set alt tags in (2) is for SEO for the images. 
Will Google follow link if anchor tag content is blocked?
googlebot;google index;google image search;alt attribute