function js(){document.getElementById("kalkulator").style.display = "block";}


function Cena(wart, wynik, typ) {

  if(typ.value=="paczka"){
	  if(wart.value > 0 && wart.value < 21) {wynik.value = 35 + " EUR";}	else	
	  if(wart.value > 20) {wynik.value = Math.round(1.70 * wart.value*100)/100+" EUR";}
  	  document.getElementById('wag').style.display = "block";					
     document.getElementById('gab').style.display = "none";	
  }	
  else if(typ.value=="rower"){
	  document.getElementById('wag').style.display = "none";	
	  document.getElementById('gab').style.display = "none";	
	  wynik.value = 50 + " EUR";	
  }	
  else if(typ.value=="gabaryt"){
	  document.getElementById('gab').style.display = "block";	
	  document.getElementById('wag').style.display = "none";	
	  wynik.value = "";	
	  //var goGabi = window.setInterval("Gabi()", 1000);
  }
}		

//-------------------------------------------------

function Imie(cu){
 if(cu.value.length < 3) {document.getElementById('imie').style.backgroundImage = "url(img/bad.gif)";} else {document.getElementById('imie').style.backgroundImage = "url(img/ok.gif)"}
}

function Tresc(tre){
 if(tre.value.length < 3) {document.getElementById('tresc').style.backgroundImage = "url(img/bad.gif)";} else {document.getElementById('tresc').style.backgroundImage = "url(img/ok.gif)"}
}

function Adres(adr){
 var dobry = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;
 if(dobry.test(adr.value)) {document.getElementById('email').style.backgroundImage = "url(img/ok.gif)"} else {document.getElementById('email').style.backgroundImage = "url(img/bad.gif)";} 
}