//tylko litery duze i male
function literyCheck(eventObj, obj)
{
	var keyCode

	// Check For Browser Type
	if (document.all){ 
		keyCode=eventObj.keyCode
	}
	else{
		keyCode=eventObj.which
	}

	var str=obj.value

	if((keyCode>64 && keyCode <91) || (keyCode>96 && keyCode <123) || (keyCode>31 && keyCode <33)){ // Allow only letters and space
		return true
	}

	return false
}