function pokaz(){
	let obrazek = document.getElementById("obrazek")
	let h = document.getElementById("wysokosc").value;
  h = parseInt(h);
	
  let choinka = "";

  for(let i = 0; i < h + 1 ; i++){
    for(let k = i ; k < h ; k++){
      choinka += "&nbsp;";
    }
    for(let j = 0; j < i ; j++){
      choinka += "*";
    }
    choinka += "<br>"
  }
  obrazek.innerHTML = choinka;
}