if (document.images)
{
// Menu Off
	img1off = new Image();          img1off.src = "images/nav/home.gif";
	img2off = new Image();          img2off.src = "images/nav/composition.gif";
	img3off = new Image();          img3off.src = "images/nav/education.gif";
	img4off = new Image();          img4off.src = "images/nav/performance.gif";
	img5off = new Image();          img5off.src = "images/nav/biography.gif";
	img6off = new Image();          img6off.src = "images/nav/green.gif";
	img7off = new Image();          img7off.src = "images/nav/email.gif";

// Menu Over
	img1on = new Image();       img1on.src = "images/nav/home_over.gif";
	img2on = new Image();       img2on.src = "images/nav/composition_over.gif";
	img3on = new Image();       img3on.src = "images/nav/education_over.gif";
	img4on = new Image();       img4on.src = "images/nav/performance_over.gif";
	img5on = new Image();       img5on.src = "images/nav/biography_over.gif";
	img6on = new Image();       img6on.src = "images/nav/green_over.gif";
	img7on = new Image();       img7on.src = "images/nav/email_over.gif";
}


// Turn menu on
function imgOn(imgName)
{
        if (document.images)
		{
            document.images[imgName].src = eval(imgName + "on.src");
        }
}

// Turn menu off
function imgOff(imgName)
{
        if (document.images)
		{
            document.images[imgName].src = eval(imgName + "off.src");
        }
}


//opens programme note popup
function openNotes(URL,wide,high)
{
	var w = wide;
	var h = high;
	var winl = (screen.availWidth - w) / 2;
	var wint = (screen.availHeight - h) / 2;
	var settings ='height='+h+',';
        settings +='width='+w+',';
        settings +='top='+wint+',';
        settings +='left='+winl+',';
	var ProgrammeNotes = open(URL,"ProgrammeNotes",settings);
	ProgrammeNotes.focus();
}


//opens mailing list popup
function openForm()
{
	var w = 260;
	var h = 234;
	var winl = (screen.availWidth - w) / 2;
	var wint = (screen.availHeight - h) / 2;
	var settings ='height='+h+',';
        settings +='width='+w+',';
        settings +='top='+wint+',';
        settings +='left='+winl+',';
	var MailingList = open("src/performance_mailinglist.html","MailingList",settings);
	MailingList.focus();
}

//opens mailing list popup
function openFormCD()
{
	var w = 275;
	var h = 375;
	var winl = (screen.availWidth - w) / 2;
	var wint = (screen.availHeight - h) / 2;
	var settings ='height='+h+',';
        settings +='width='+w+',';
        settings +='top='+wint+',';
        settings +='left='+winl+',';
	var MailingList = open("src/cd_mailinglist.html","MailingList",settings);
	MailingList.focus();
}