// JavaScript Document

function validateInt(obj, minValue, maxValue, defaultValue) {
	if (typeof obj == "string") obj = document.getElementById(obj);
	var currentValue = parseInt(obj.value);
	if (isNaN(currentValue)) {
		currentValue = '';
	} else {
		if (currentValue < minValue) currentValue = '';
		if (currentValue > maxValue) currentValue = '';
	}
	if (currentValue == '' && defaultValue != '') {
		currentValue = defaultValue;	
	}
	obj.value = currentValue;
}