function Slika(img){
  foto1= new Image();
  foto1.src=(img);
  Controlla(img);
}
function Controlla(img){
  if((foto1.width!=0)&&(foto1.height!=0)){
    viewFoto(img);
  }
  else{
    funzione="Controlla('"+img+"')";
    intervallo=setTimeout(funzione,20);
  }
}
function viewFoto(img){
  largh=foto1.width+20;
  altez=foto1.height+20;
  stringa="width="+largh+",height="+altez;
  finestra=window.open(img,"",stringa);
}

// Check for email address: look for [@] and [.] 

function isEmail(elm) 
{
		if (elm.value.indexOf("@") + "" != "-1" &&
				elm.value.indexOf(".") + "" != "-1" &&
				elm.value != "") 
		return true;
		else return false;
}

// Check for null and for empty

function isFilled(elm) 
{
		if (elm.value == "" ||
				elm.value == null) 
		return false;
		else return true;
}

function isReady(form) 
{
		// is address element a real email address?

		if (isEmail(form.email) == false) 
		{ 
			alert("Molim, unesite ispravnu mail adresu!");
			form.email.focus();
			return false;
		}
		if (isFilled(form.poruka) == false) 
		{ 
			alert("Molim, unesite poruku!");
			form.email.focus();
			return false;
		}
	return true;
}