script to create directory based on current file name and then save the file in that directory

You don’t mention which format the original file is (and figuring that and its current settings out seems too much of a hassle to me) so this would only save the jpgs into the folder (and create one if it does not exist).

If you want to give it a try, paste the following text into a new file in ExtendScript Toolkit (part of Photoshop’s installation, Applications/Utilities/Adobe Utilities/ExtendScript Toolkit CS4 or /Applications/Utilities/Adobe Utilities-CS5/ExtendScript Toolkit CS5) and save it as a jsx-file into Photoshop’s Presets/Scripts-folder.

After restarting Photoshop the Script should be available under File > Scripts and can be assigned a Keyboard Shortcut directly, recorded into an Action, (in CS4 and CS5) be used in a Configurator-Panel or started from ExtendScript Toolkit directly.

// saves jpg into folder of file’s name next to file;
// be advised: this  overwrites existing jpgs of the same name without prompting;
// thanks to xbytor;
// 2012, use it at your own risk;
#target photoshop;
if (app.documents.length > 0) {
var thedoc = app.activeDocument;
// getting the name and location;
var docName = thedoc.name;
if (docName.indexOf(".") != -1) {var basename = docName.match(/(.*)\.[^\.]+$/)[1]}
else {var basename = docName};
// getting the location, if unsaved save to desktop;
try {var docPath = thedoc.path}
catch (e) {var docPath = "~/Desktop"};
// create folder if it does not exist;
var folderString = docPath+"/"+basename;
if (Folder(folderString).exists == false) {new Folder(folderString).create()};
// jpg options;
var jpegOptions = new JPEGSaveOptions();
jpegOptions.quality = 12;
jpegOptions.embedColorProfile = true;
jpegOptions.matte = MatteType.NONE;
//save jpg as a copy:
thedoc.saveAs((new File(folderString+"/"+basename+".jpg")),jpegOptions,true);
};