var fields=Array();

function inputHint_isEmpty(id) {
	return fields[id]["isFocused"]?(document.getElementById(id).value==''):fields[id]["isEmpty"];
}

function inputHint_focus(e) {
	if (e == null)
		e = window.event;
	element = (e.target != null) ? e.target : e.srcElement;
	fields[element.id]["isFocused"] = true;
	if (fields[element.id]["isEmpty"]) {
		element.style.color='#000000';
		element.value='';
	}
}

function inputHint_blur(e) {
	if (e == null)
		e = window.event;
	element = (e.target != null) ? e.target : e.srcElement;
	if (element.value == '') {
		fields[element.id]["isEmpty"] = true;
		element.value=fields[element.id]["emptyValue"];
		element.style.color = '#aaaaaa';
	}
	else
		fields[element.id]["isEmpty"] = false;
	fields[element.id]["isFocused"] = false;
}

function inputHint_init(id,emptyValue) {
	if (document.getElementById(id) == null)
		return;
	inputField = document.getElementById(id);
	fields[id] = new Array();
	fields[id]["emptyValue"] = emptyValue;
	fields[id]["isFocused"] = false;
	inputField.onfocus = inputHint_focus;
	inputField.onblur = inputHint_blur;
	if (inputField.value == "") {
		inputField.value = emptyValue;
		inputField.style.color = '#aaaaaa';
		fields[id]["isEmpty"] = true;
	}
	else
		fields[id]["isEmpty"] = false;
}