function assegnaXMLHttpRequest() {
	var XHR = null,
	browserUtente = navigator.userAgent.toUpperCase();
	if(typeof(XMLHttpRequest) === "function" || typeof(XMLHttpRequest) === "object")
	XHR = new XMLHttpRequest();
	else if(window.ActiveXObject && browserUtente.indexOf("MSIE 4") < 0) {
		if(browserUtente.indexOf("MSIE 5") < 0) XHR = new ActiveXObject("Msxml2.XMLHTTP");
		else XHR = new ActiveXObject("Microsoft.XMLHTTP");
	}
	return XHR;
}
var b_width;
var b_height;

function ApriPagina(percorso,boxwidth,boxheight){
	Attesa();
	b_width=boxwidth;
	b_height=boxheight;
	if(ajax) {
		
		ajax.open("GET", percorso, true);
		ajax.setRequestHeader("content-type", "application/x-www-form-urlencoded");
		ajax.setRequestHeader("connection", "close");
		dati='';
		ajax.onreadystatechange = function(){
			if(ajax.readyState === 4 && ajax.status == 200){
				document.getElementById("lb").innerHTML=ajax.responseText;
				document.getElementById("lb").style.width=b_width+"px";
				document.getElementById("lb").style.height=b_height+"px";
				if (navigator.userAgent.toLowerCase().indexOf("msie 6")!= -1){
					$("lb").style.marginTop="10px";
					$("lb").style.top="100px";
				} else {

					$("lb").style.marginTop="-" + parseInt(b_height/2) + "px";
				}
				$("lb").style.marginLeft="-" + parseInt(b_width/2) + "px";
				$('overlay_lb').style.display='block';
				$('lb_loading').style.display='none';
				$('lb').style.display='block';
				if (navigator.userAgent.toLowerCase().indexOf("msie 6")!= -1) $('logo').focus();
			}
		}
		ajax.send(dati);
	 }
//		 document.getElementById('boxsezione').style.width='';
//		 document.getElementById('boxsezione').style.height='';
	 return false;
}

	function Attesa(){
		$("lb_loading").style.marginLeft="-" + parseInt(100/2) + "px";
		$("lb_loading").style.marginTop="-" + parseInt(100/2) + "px";
		$('lb_loading').innerHTML='<div></div>';
		$('overlay_lb').style.display='block';
		$('lb_loading').style.display='block';
		$('lb').style.display='none';
	}

function lb_stop(){
	$('overlay_lb').style.display='none';
	$('lb_loading').style.display='none';
	$('lb').style.display='none';
	return false;
}
function $(id){return document.getElementById(id);}
ajax=assegnaXMLHttpRequest();