var isNav = (navigator.appName.indexOf("Netscape") !=-1);
	var isIE = (navigator.appName.indexOf("Microsoft") !=-1);

	function getPos(el,pos) {
		var iPos = 0;
		while (el!=null) {
			iPos+=el["offset" + pos];
			el = el.offsetParent;
		}
		return iPos;
	}
	
	function show(padre1, da_visualizzare, offsetX, offsetY) {
		var padre = MM_findObj(padre1,'');
		var obj_vis = MM_findObj(da_visualizzare,'');
		if (obj_vis) {
			if (obj_vis.style) { obj_vis = obj_vis.style; }
			obj_vis.visibility='';
			obj_vis.left = (getPos(padre,"Left"))+offsetX;
			obj_vis.top = getPos(padre,"Top") + padre.offsetHeight + offsetY;
		}
	}
	
	function spegni_layer() {
		//document.getElementById('LayerMenu').style.visibility='hidden';
		//document.getElementById('LayerNormativa').style.visibility='hidden';
		//document.getElementById('LayerChi').style.visibility='hidden';
		//document.getElementById('LayerMercato').style.visibility='hidden';
		//MM_findObj('LayerMenu','').style.visibility='hidden';
		//MM_findObj('LayerNormativa','').style.visibility='hidden';
		//MM_findObj('LayerChi','').style.visibility='hidden';
		//MM_findObj('LayerMercato','').style.visibility='hidden';
		MM_showHideLayers('LayerMenu','','hide','LayerNormativa','','hide','LayerChi','','hide','LayerMercato','','hide');
	}
	
	function checkMail(email) {
		var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,4})+$/; 
		if (!email_reg_exp.test(email) || (email == "")) {
			return false;
		}
		else {
			return true;
		}
	}
	
	function MM_findObj(n, d) {
		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 && document.getElementById) x=document.getElementById(n);
		return x;
	}
	
	function MM_showHideLayers() {
		var i,p,v,obj,args=MM_showHideLayers.arguments;
		for (i=0; i<(args.length-2); i+=3)
			if ((obj=MM_findObj(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 apri_help(id_sez) {
		var larghezza = 480;
		var altezza = 300;
		var X = 50;
		var Y = 50;
		eval("window.open('help_sezioni.asp?id="+id_sez+"','Help_Insic','scrollbars=yes,resizable=no,width="+larghezza+",height="+altezza+",status=no,location=no,toolbar=no,top="+Y+",left="+X+"')");
	}
	
	//function preloadImages() {
	//	MM_preloadImages();
	//}

	//function MM_preloadImages() {
	//	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];
	//			}
	//	}
	//}