Automated Resize To Web.jsx

/* 
 * @title   Automated Resize to Web 
 * @desc    This is a script for Photoshop that batch processes on all supported filetypes (jpg, jpeg, tif, psd) in the chosen directory 
 *          to be web ready. The script outputs the new files to the .jpg filetype. The only saving method is "Save for Web...", there is 
 *          no print quality exporting with this script. The accepted filetypes: jpg, jpeg, tif, psd. 
 * 
 * @author  Jonah Bitautas, http://workfunc.com
 */
#target "photoshop"

if (BridgeTalk.appName == "photoshop") 
{
    app.bringToFront;
    
    var inputFolder = Folder.selectDialog ("Select the folder that contains the files for export:");
    
    if (inputFolder != null) {
        var fileList = inputFolder.getFiles (/\.(jpg|jpeg|tif|psd|)$/i);
        var outputFolder = new Folder (decodeURI (inputFolder) + "/Edited");
        var maxPixels = prompt ("Please choose the MAXIMUM for exported files:", "700");
        var desiredWidth = prompt ("Please choose the desired WIDTH for exported files. This must be less than the maximum:", "640");
        var desiredHeight = prompt ("Please choose the desired HEIGHT for exported files. This must be less than the maximum:", "480");
        
        if (outputFolder.exists == false) outputFolder.create ();
        
        for (var i = 0; i < fileList.length; i++) {
            if (fileList [i] instanceof File) {
                var document = open (fileList [i]);
                var documentName = fileList [i].name.slice (0, -4);
                
                while (app.documents.length) {
                    var newFile = new File (decodeURI (outputFolder) + "/" + documentName + ".jpg");
                    var max = maxPixels + " pixels";
                    
                    document.flatten ();
                    
                    if (document.resolution > 72 || (document.width > max || document.height > max)) {
                        if (document.width > document.height) {
                            var newWidth = new UnitValue (desiredWidth + " pixels");
                            var newHeight = new UnitValue (desiredHeight + " pixels");
                        } else {
                            var newWidth = new UnitValue (desiredHeight + " pixels");
                            var newHeight = new UnitValue (desiredWidth + " pixels");
                        }
                        document.resizeImage (newWidth, newHeight, 72);
                    }
                    exportOptions = new ExportOptionsSaveForWeb ();
                    exportOptions.format = SaveDocumentType.JPEG;
                    exportOptions.quality = 80;
                    
                    document.exportDocument (newFile, ExportType.SAVEFORWEB, exportOptions);
                    document.close (SaveOptions.DONOTSAVECHANGES);
                }
            }
            if (i == fileList.length - 1) {
                alert ("All the files have been exported.");
            }
        }
    }
}