function sizetextarea(field)
{
  x = field.value.split('\n');
  y = 1;
  for (z = 0;z < x.length; z++)
  {
    if(x[z].length >= field.cols)
      y += Math.floor(x[z].length / field.cols);
  }
	
  y += x.length;
  if(y > field.rows)
    field.rows = y;
	
}