/*** Funzioni di base per firefox (e browser compatibili) ***/

function GetElementById(id) { return document.getElementById(id); }
function ButtonSubmitClick(src, value) { return 1; }


/* AJAX */

function GetXmlHttpObject() {
	var objXmlHttp = new XMLHttpRequest()
	//objXmlHttp.onload=handler
	//objXmlHttp.onerror=handler
	return objXmlHttp
} 

/* Fine AJAX */

/* Interazione DOM */
function DelInnerHTML(el) {
	while (el.hasChildNodes())
    	    el.removeChild(el.lastChild);
}

function MakeHtmlFrag(el, content) {
        rng = document.createRange();
	rng.setStartBefore(el);
	htmlFrag = rng.createContextualFragment(content);
        return htmlFrag;
}

function AddInnerHTMLFrag(el, htmlFrag) {
	el.appendChild(htmlFrag);
}

function AddInnerHTML(el, content) {
        htmlFrag = MakeHtmlFrag(el.lastChild, content);
        AddInnerHTMLFrag(el, htmlFrag);
}

function AddHTMLRow(tbody, htmlrow) {
        return AddInnerHTML(tbody, htmlrow);
}
function SetInnerHTMLFrag(el, htmlFrag) {
	DelInnerHTML(el);
	AddInnerHTMLFrag(el, htmlFrag);
}

function SetInnerHTML(el, content) {
	htmlFrag = MakeHtmlFrag(el, content)
	SetInnerHTMLFrag(el, htmlFrag);
}

function AddEventListener(el, type, listener, useCapture) {
   el.addEventListener(type, listener, useCapture); 
}

/* Fine interazione DOM */

/* Informazioni varie browser */
function GetFiringObj(e) { 
    if (!e) var e = window.event; //window.event is not supported since FF 2.0
    return e.target;  
}

function StopPropagation(e) {
    return e.stopPropagation();
}

function GetInnerWidth(win) { 
	if (win) return win.innerWidth; 
	else return window.innerWidth; 
}
function GetInnerHeight(win) { 
	if (win) return win.innerHeight; 
	else return window.innerHeight;
}

function GetLeft(win) { 
	if (win) return win.screenX; 
	else return window.screenX;
}

function GetTop(win) { 
	if (win) return win.screenY; 
	else return window.screenY;
}

function GetClientXPosition(e) { 
    if (!e) var e = window.event;
    return e.clientX; 
}
function GetClientYPosition(e) { 
    if (!e) var e = window.event;
    return e.clientY; 
}
function GetScrollXPosition() { return window.pageXOffset; }
function GetScrollYPosition() { return window.pageYOffset; }
/* Fine informazioni varie browser */

/*** Fine funzioni di base per firefox ***/