function k_addLoadEvent(func) {
	var oldonload=window.onload;
	if(typeof window.onload!='function') {
		window.onload = func;
		}
	else {
		window.onload = function() {
			if (oldonload) oldonload();
			func();
			}
		}
	}

function b3_centerImg(t) {
	t.style.position='relative';
	t.style.top=-(t.height-t.parentNode.parentNode.offsetHeight)/2+'px';
	t.style.left=-(t.width-t.parentNode.parentNode.offsetWidth)/2+'px';
	}

/* pannello newsletter */
var nl_t=0;
var nl_s="close";
function b3_newsletterMouseOver() {
	if(nl_s=="close") {
		if(nl_t) clearInterval(nl_t);
		nl_t=setInterval("b3_newsletterResize(25)",50);
		}
	else b3_newsletterMouseOut();
	}
function b3_newsletterMouseOut() {
	if(nl_t) clearInterval(nl_t);
	nl_t=setInterval("b3_newsletterResize(-25)",50);
	}
function b3_newsletterResize(px) {
	var nl_div=document.getElementById('newsletter');
	nl_div.style.height=(nl_div.offsetHeight+px)+'px'
	if(nl_div.offsetHeight>200) {
		clearInterval(nl_t);
		nl_s="open";
		}
	if(nl_div.offsetHeight<50) {
		nl_div.style.height='33px';
		clearInterval(nl_t);
		nl_s="close";
		}
	}
function b3_checkNl(f) {
	if(!f.email.value.match(/.*@.*\..{2,4}/)) { alert('E-mail non valida'); f.email.focus(); return false; }
	else if(!f.privacy.checked) { alert('Devi acconsentire al trattamento dei dati personali'); f.privacy.focus(); return false; }
	return true;
	}
	
/* pop up */
function k_pop(url,w,h) {
	if(!w) w=300;
	if(!h) h=200;
	window.open(url,"popup","top=10,left=10,width="+w+",height="+h+",status=no,menubar=no,toolbar=no,scrollbar=no");
	}

/* AJAX */
kAjax=function() {
	var onSuccess=function(txt) {};;
	var onFail=function(txt) {};;
	var ajaxObj=null;
	var method="get";
	var uri="";
	var vars="";

	this.send=function(vmethod,vuri,vvars) {
		method=vmethod.toLowerCase();
		uri=vuri;
		vars=vvars;
		ajaxSend();
		}
	this.onSuccess=function(func) { onSuccess=func }
	this.onFail=function(func) { onFail=func; }

	function createXMLHttpRequest() {
		var XHR=null;
		if(typeof(XMLHttpRequest)==="function"||typeof(XMLHttpRequest)==="object") XHR=new XMLHttpRequest(); //browser standard
		else if(window.ActiveXObject&&!kBrowser.IE4) { //ie4, BLOCCATO
			if(kBrowser.IE5) XHR=new ActiveXObject("Microsoft.XMLHTTP"); //ie5.x: metodo diverso
			else XHR=new ActiveXObject("Msxml2.XMLHTTP"); //ie6: metodo diverso
			}
		return XHR;
		}
	function onStateChange() {
		if(ajaxObj.readyState===4) {
			if(ajaxObj.status==200) onSuccess(ajaxObj.responseText,ajaxObj.responseXML);
			else onFail(ajaxObj.status);
			}
		}
	function ajaxSend() {
		ajaxObj=createXMLHttpRequest();
		if(method=="get") {
			uri+="?"+vars;
			ajaxObj.open(method,uri,true);
			ajaxObj.onreadystatechange=onStateChange;
			ajaxObj.send(null);
			}
		else if(method=="post") {
			ajaxObj.open(method,uri,true);
			ajaxObj.setRequestHeader("content-type","application/x-www-form-urlencoded");
			ajaxObj.setRequestHeader("connection","close");
			ajaxObj.onreadystatechange=onStateChange;
			ajaxObj.send(vars);
			}
		delete ajaxObj;
		}	
	}