function parse_srt(textarea){     
  var srt = $(textarea).val();    
  //var lines = srt.split('\n\n');    
  return srt;
}       

function tr(content){ return "<tr>"+content+"</tr>" }

function td(content){ return "<td>"+content+"</td>" }

numstampRE = /(\d+\n\d\d:\d\d:\d\d,\d\d\d --> \d\d:\d\d:\d\d,\d\d\d)/;

$(function(){ 
  var source_text = parse_srt('#source textarea');
  var source_lines = source_text.split(numstampRE)

  var target_text = parse_srt('#target textarea');
  var target_lines = target_text.split(numstampRE)
  console.log(source_lines[0]);

  for (var i=0;i<1200;i++){
  $('#subs').append(
    tr(td(target_lines[i]) + td(source_lines[i]))
  );
  }
})