var data = $('input[name=excel_data]').val();
var rows = data.split("n");

var table = $('<table />');

for(var y in rows) {
    var cells = rows[y].split("t");
    var row = $('<tr />');
    for(var x in cells) {
        row.append('<td>'+cells[x]+'</td>');
    }
    table.append(row);
}

// Insert into DOM
$('#excel_table').html(table);