function showFoto(id) {
	noweOkno = window.open('show_foto.php?id='+id+'&sze='+screen.width+'&wys='+screen.height, 'Foto', 'menubar=no, toolbar=no, location=no, scrollbars=no, resizable=yes, status=no, width=800, height=60, left=100, top=50');
}

function showMini(src) {
	src = src.substr(src.lastIndexOf('/')+1);
	src = src.substr(0, src.lastIndexOf('.'));
	showFoto(src);
}

function setInputValue(id, val) {
	var e = document.getElementById(id);
	if (!e) return;
	var value = e.value;
	if (!isNumeric(value)) value = 0;
	value = Number(value) + Number(val);
	if (value < 1) value = 1;
	e.value = value;
	return;
}

function isNumeric(sText) {
   var ValidChars = "0123456789.";
   var IsNumber = true;
   var Char; 
   for (i = 0; i < sText.length && IsNumber == true; i++) { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) {
         IsNumber = false;
      }
   }
   return IsNumber;
}