function isNumberKey(evt)
{
 var charCode = (evt.which) ? evt.which : event.keyCode
 if (charCode > 31 && (charCode < 48 || charCode > 57))
	return false;
 
 return true;
}
function checkKol(id, kolicina)
{
	var baskkol = document.getElementById("kolicina"+id).value;
	if( parseInt(baskkol) > parseInt(kolicina) ) document.getElementById("kolicina"+id).value = kolicina;
	return true;
}