var active = 0;
<!--


function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}


//-->
function $(id){
	return document.getElementById(id);	
}
// AJAX
/* ========================  */
function estrarreScript(testo){
    // inizia
    var ini = 0;
	
    while (ini!=-1){
		
        // cerca per una tag di script
        ini = testo.indexOf('<script', ini);
        // si trova
			
        if (ini >=0){
            ini = testo.indexOf('>', ini) + 1;
            // cerca il fine dello script
            var fine = testo.indexOf('</script>', ini);
            codice = testo.substring(ini,fine);
            eval(codice);
        }
    }
}
function iniziaAjax(file, div, msg, opz){
	var xmlHttp;
	try{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	} catch (e){
		// Internet Explorer
		try{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      	}
   		catch (e){
      		try{
        		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        	}
      		catch (e){
				alert("Il suo navigatore non supporta AJAX!");
				return false;
        	}
      	}
    }
	xmlHttp.onreadystatechange=function(){
		if(xmlHttp.readyState==4){
			$(div).innerHTML=xmlHttp.responseText;
			estrarreScript(xmlHttp.responseText);				
		}else{
			if($(div)) $(div).innerHTML=msg; 
		}
	}
	xmlHttp.open("GET",file,true);
	xmlHttp.send(null);
}

/* CARRELLO */
function selez(img,id,totale,ogg){
	for(i=0;i<totale;i++){
		$("imgpiccola_"+i).className='op50';
	}
	$(ogg).className='op100';
	iniziaAjax("include/caricaimg.php?img="+img, "img_grande", "<img src='/img/ajax-loader.gif'>");
	active = id;
}
function agg_carrello(id_prodotto){
	$("box_carrello").style.display='';
	iniziaAjax("include/aggcarr.php?id="+active+"&id_prod="+id_prodotto, "box_carrello", "<img src='/img/ajax-loader.gif'>");
}
function cqt(opz,scarto,massimo,minimo){
	if(!scarto) scarto=1;
	if(!massimo) massimo=10000;
	if(!minimo) minimo=1;
	if(opz=='piu'){
		if($("quant")){
			if(parseFloat($("quant").value)<parseFloat(massimo))
				$("quant").value=parseFloat($("quant").value)+parseFloat(scarto);
		}
	} else {
		if($("quant")){
			if(parseFloat($("quant").value)>parseFloat(minimo)) $("quant").value=parseFloat($("quant").value)-parseFloat(scarto);	
		}
	}
}