How do I make sure .js files are not cached and only image files are? Here is what I have now for refresh_patterns: refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 refresh_pattern -i \.jpg$ 0 100% 10080 refresh_pattern -i \.gif$ 0 100% 10080 refresh_pattern -i \.png$ 0 100% 10080 is the . entry causing the problem?