var m1_n = new Image;
var m1_o = new Image;
var m2_n = new Image;
var m2_o = new Image;
var m3_n = new Image;
var m3_o = new Image;
var m4_n = new Image;
var m4_o = new Image;
var m5_n = new Image;
var m5_o = new Image;
var m6_n = new Image;
var m6_o = new Image;
//
m1_n.src = "images/menu/1_n.gif";
m1_o.src = "images/menu/1_o.gif";
m2_n.src = "images/menu/2_n.gif";
m2_o.src = "images/menu/2_o.gif";
m3_n.src = "images/menu/3_n.gif";
m3_o.src = "images/menu/3_o.gif";
m4_n.src = "images/menu/4_n.gif";
m4_o.src = "images/menu/4_o.gif";
m5_n.src = "images/menu/5_n.gif";
m5_o.src = "images/menu/5_o.gif";
m6_n.src = "images/menu/6_n.gif";
m6_o.src = "images/menu/6_o.gif";
//
function cambio(j) {
	var i = j.src;
	var c = i.substring(i.lastIndexOf('/')+1, i.length);
	var l = c.substr(2 , 1);
	var k = c.substr(0 , 1);
	if (l != "o") {
		var img = "m" + k + "_" + "o";
	}
	else {
		var img = "m" + k + "_" + "n";
	}
	j.src = this[img].src;
};

function apri(sottomenu) {
	
	if (document.all) {
		
		eval (sottomenu + ".style.visibility = 'visible'");
		
	} else if (document.getElementById && document.body.style) {
		
		document.getElementById(sottomenu).style.visibility = "visible";
		
	}
	
	else if (document.layers) {
		
		eval("document." + sottomenu + ".visibility = 'visible'");
		
	}
};
	
function chiudi(sottomenu) {
	
	if (document.all) {
		
		eval(sottomenu + ".style.visibility = 'hidden'");
		
	} else if (document.getElementById && document.body.style) {
		
		document.getElementById(sottomenu).style.visibility = "hidden";
		
	} else if (document.layers) {
		
		eval("document." + sottomenu + ".visibility = 'hidden'");
		
	}
};

var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])

function fixPNG(myImage) 
{
    if ((version >= 5.5) && (version < 7) && (document.body.filters)) 
    {
       var imgID = (myImage.id) ? "id='" + myImage.id + "' " : ""
	   var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : ""
	   var imgTitle = (myImage.title) ? 
		             "title='" + myImage.title  + "' " : "title='" + myImage.alt + "' "
	   var imgStyle = "display:inline-block;" + myImage.style.cssText
	   var strNewHTML = "<span " + imgID + imgClass + imgTitle
                  + " style=\"" + "width:" + myImage.width 
                  + "px; height:" + myImage.height 
                  + "px;" + imgStyle + ";"
                  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
                  + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>"
	   myImage.outerHTML = strNewHTML	  
    }
}