function getStyleObject(objectId) {
    if(document.getElementById && document.getElementById(objectId)) 
		return document.getElementById(objectId).style;
    else if (document.all && document.all(objectId))
		return document.all(objectId).style;
    else if (document.layers && document.layers[objectId])
		return document.layers[objectId];
	else
		return false;
}
function showObject(objectId) {
	var styleObject = getStyleObject(objectId);
    if(styleObject) {
		styleObject.visibility = 'visible';
		styleObject.display = 'block';
		return true;
    } 
	else
		return false;
}
function hideObject(objectId) {
	var styleObject = getStyleObject(objectId);
    if (styleObject) {
		styleObject.visibility = 'hidden';
		styleObject.display = 'none';
		return true;
    }
	else
		return false;
}
function getElemById(objectId) {
    if(document.getElementById && document.getElementById(objectId)) 
		return document.getElementById(objectId);
    else if (document.all && document.all(objectId))
		return document.all(objectId);
	else
		return false;
}
function getElemByName (elemName) {
	var list = false;
	if (document.getElementsByName) {
		list = document.getElementsByName(elemName);
	} else if (document.all) {
		list = document.all(elemName)
	}
	return list;
}
function getElemByTagName (elemName) {
	var list = false;
	if (document.getElemByTagName) {
		list = document.getElemByTagName(elemName);
	} else if (document.all && document.all.tags) {
		list = document.all.tags(elemName)
	} else if (document.all) {
		list = document.all(elemName)
	}
	return list;
}
function addEventHandler (target, eventName, handlerName) { 
    if (target.addEventListener)
        target.addEventListener(eventName, handlerName, false);
    else if (target.attachEvent)
        target.attachEvent("on" + eventName, handlerName);
    else
        target["on" + eventName] = handlerName;
}
function triggerEvent (elementID, eventName) {
	var txt = getElemById (elementID);

	if (txt.fireEvent)
		txt.fireEvent ("on" + eventName);

	if (document.createEvent) {
		var evt = document.createEvent ("HTMLEvents");
		if (evt.initEvent)
			evt.initEvent (eventName, true, true);
		if (txt.dispatchEvent)
			txt.dispatchEvent (evt);
	}
}