function LoopThrough() {
    var sheets = SpreadsheetApp.getActiveSpreadsheet().getSheets();
    for (var i = 0; i < sheets.length ; i++ ) {
        var sheet = sheets[i];
        SheetPrep(sheet);
        }
    }


function SheetPrep() {
  var spreadsheet = SpreadsheetApp.getActive();
  spreadsheet.getRange('C8').activate();
  spreadsheet.getActiveSheet().setColumnWidth(2, 103);
  spreadsheet.getRange('A1').activate();
  var currentCell = spreadsheet.getCurrentCell();
  spreadsheet.getActiveRange().getDataRegion().activate();
  currentCell.activateAsCurrentCell();
  currentCell = spreadsheet.getCurrentCell();
  var sheet = spreadsheet.getActiveSheet();
  sheet.getRange(1, 1, sheet.getMaxRows(), sheet.getMaxColumns()).activate();
  currentCell.activateAsCurrentCell();
  spreadsheet.getActiveRangeList().setBackground('#ffffff');
  spreadsheet.getRange('1:20000').activate();
  spreadsheet.getRange('1:20000').createFilter();
  spreadsheet.getRange('B:B').activate();
}