for(var row= 0, rowStates=[]; row<rowsCount; ++row){
    rowStates = sheetStates[row];
    timesheetrowsdata += rowStates+(row==rowsCount?'':',');
  }

  //Remove the commas
  timesheetcoldata = timesheetrowsdata.replace(/,/g, '');

  var tmpstr1 = timesheetcoldata.search(/1/);

  //code here to replace the first round of characters.
  //code here to replace the second round of characters.
  //and so on.......

  //  strip any leading 0's
      while(timesheetcoldata.charAt(0) === '0'){
      timesheetcoldata = timesheetcoldata.substr(1);
    }

00010000001000000100000010000001000000100000010000001000000100000010000001000000100000010000001000000100000010001111000111100011110001111000111000011100001110000111000011100001110000000000000000000000000

00010000001000000100000010000001000000100000010000001000000100000010000001000000100000010000001000000100000010000001000000100000010000001000000000000000000000000000000000000000000000000000000000000000000

10000001000000100000010000001000000100000010000001000000100000010000001000000100000010000001000000100000010000001000000100000010000001000000000000000000000000000000000000000000000000000000000000000000