Modifying downbar.js to add Finder 'WhereFroms' to downloads

 // Arguments must be separated into an array
        var args = ['-w', 'com.apple.metadata:kMDItemWhereFroms', '<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"><plist version="1.0"><array><string>'+aDownload.source.spec+'</string></array></plist>', aDownload.targetFile.path ];