You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ps_LST_lpa.m
    path of file: ./repos/ExploreASL/External/SPMmodified/toolbox/LST
    
    the code of the file until where you have to start completion: function varargout = ps_LST_lpa(varargin)
%ps_LST_lpa   Lesion segmentation by a lesion predicialgorithm (LGA)
%   Part of the LST toolbox, www.statistical-modell
    
function () {\n', ...
              '  var min_slice', jsid, ' = ', num2str(r(1)), ',\n', ...
              '  max_slice', jsid, ' = ', num2str(r(2)), ',\n', ...
              '  slice', jsid, ' = ', num2str(round(mean(r))), ';\n', ...
              '  $( \"#slider_', jsid, '\" ).slider({\n', ...
              '    min: min_slice', jsid, ',\n', ...
              '    max: max_slice', jsid, ',\n', ...
              '    value: slice', jsid, ',\n', ...
              '    slide: function( event, ui ) {\n', ...
              '      slice', jsid, ' = ui.value;\n', ...
              '      $( \"#overlay', jsid, '\" ).attr(\"src\", \"', ps_fullfile(cd, nameFolder), '/overlay_\" + ui.value + \".png\"', ');\n', ...
              '      $( \"#slice', jsid, '\" ).text(\"Slice \" + ui.value);\n', ...
              '    }\n', ...
              '  });\n', ...
              '  $( \"#button-left', jsid, '\" ).button({\n', ...
              '    icons: {\n', ...
              '      primary: \"ui-icon-carat-1-w\"\n', ...
              '    },\n', ...
              '    text: false,\n', ...
              '    }).click(function(event, ui){\n', ...
              '        if(slice', jsid, ' > min_slice', jsid, '){\n', ...
              '            slice', jsid, ' = slice', jsid, ' - 1;\n', ...
              '            $( \"#overlay', jsid, '\" ).attr(\"src\", \"', ps_fullfile(cd, nameFolder), ['/overlay_\" + slice', jsid, ' + \".png\"'], ');\n', ...
              '            $( \"#slice', jsid, '\" ).text(\"Slice \" + slice', jsid, ');\n', ...
              '            $(\"#slider_', jsid, '\").slider(\"option\", "value", slice', jsid, ');\n', ...
              '        }\n', ...
              '  });\n', ...
              '  $(\"#button-right', jsid, '\").button({\n', ...
              '    icons: {\n', ...
              '      primary: \"ui-icon-carat-1-e\"\n', ...
              '    },\n', ...
              '    text: false,\n', ...
              '    }).click(function(event, ui){\n', ...
              '        if(slice', jsid, ' < max_slice', jsid, '){\n', ...
              '            slice', jsid, ' = slice', jsid, ' + 1;\n', ...
              '            $( \"#overlay', jsid, '\").attr(\"src\", \"', ps_fullfile(cd, nameFolder), ['/overlay_\" + slice', jsid, ' + \".png\"'], ');\n', ...
              '            $( \"#slice', jsid, '\").text(\"Slice \" + slice', jsid, ');\n', ...
              '            $(\"#slider_', jsid, '\").slider(\"option\", \"value\", slice', jsid, ');\n', ...
              '        }\n', ...
              '  });', ...
              '});'];

        fprintf(JSid, js_strout);
        fclose(JSid);

        %HTMLid = fopen(fullfile(nameFolder, [id, '.html']), 'wt');
        fprintf(HTMLid, strout);

        HTMLid2 = fopen(fullfile(nameFolder, ['LST_lpa_', namf2, '.html']), 'wt');
        fprintf(HTMLid2, strout);
        fclose(HTMLid2);

        strout = '  </head>\n  <body>\n';
        fprintf(HTMLid, strout);
        fclose(HTMLid);
        fprintf(fileID, ' ok.\n');

        tt = toc; tt = [num2str(round(tt)), 's'];
        stroutHTML = [repmat(' ', 1, 72 - numel(tt) - numel(stroutHTML)), tt, '\n'];
        fprintf(stroutHTML)


    end