// Info o pozostalej ilosci znaków
function inv_updateAvailLength(elemValName, elemInfoName, max)
{
	elemVal = $(elemValName);
	elemInfo = $(elemInfoName);
	if (max > elemVal.value.length)
	{
		elemInfo.innerHTML = (max-elemVal.value.length);
	}
	else 
	{
		elemInfo.innerHTML = 0;
		elemVal.value = elemVal.value.substr(0, max);
	}
}