Xg9icalcColSum֐j
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function calcColSum(ecol, erow){
  if(col1 == -1 && row1 == -1){
    col1 = ecol;
    row1 = erow;
  }else if(col1 >= 0 && row1 >= 0){
    col2 = ecol;
    row2 = erow;
    if(row2 > row1 && col1 == col2){
      sum = parseFloat(0);
      for(i = row1; i <= row2; i++){
        if(isNaN(parseFloat(cdat[i][col1])) != true){
          sum += parseFloat(cdat[i][col1]);
        }
      }
      cdat[++row2][col1] = sum;
      grid.setCellText(cdat);         
      $("grid").innerHTML = grid;
      col1 = -1;
      row1 = -1;
      col2 = -1;
      row2 = -1;
    } 
  }
}
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