if (document.images)
{
        bild0 = new Image();
        bild1 = new Image();
        bild2 = new Image();
        bild3 = new Image();
        bild4 = new Image();
        bild5 = new Image();
        bild6 = new Image();
        bild7 = new Image();
        bild8 = new Image();
        bild9 = new Image();
        bild10 = new Image();
        bild11 = new Image();
        bild12 = new Image();
        bild13 = new Image();
      
                   
       bild0.src = "images/navigation/but0.gif";
       bild1.src = "images/navigation/but0o.gif";
       bild2.src = "images/navigation/but1.gif";
       bild3.src = "images/navigation/but1o.gif";
       bild4.src = "images/navigation/but2.gif";
       bild5.src = "images/navigation/but2o.gif";
       bild6.src = "images/navigation/but3.gif";
       bild7.src = "images/navigation/but3o.gif";
       bild8.src = "images/navigation/but4.gif";
       bild9.src = "images/navigation/but4o.gif";
       bild10.src = "images/navigation/but5.gif";
       bild11.src = "images/navigation/but5o.gif";
       bild12.src = "images/navigation/but6.gif";
       bild13.src = "images/navigation/but6o.gif";
              
}

function display1(num)
{
                if (num == "0" && active != 0) document['but0'].src=bild0.src;
                else if (num == "1") document['but0'].src=bild1.src;
                else if (num == "2" && active != 1) document['but1'].src=bild2.src;
                else if (num == "3") document['but1'].src=bild3.src;
                else if (num == "4" && active != 2) document['but2'].src=bild4.src;
                else if (num == "5") document['but2'].src=bild5.src;
                else if (num == "6" && active != 3) document['but3'].src=bild6.src;
                else if (num == "7") document['but3'].src=bild7.src;
                else if (num == "8" && active != 4) document['but4'].src=bild8.src;
                else if (num == "9") document['but4'].src=bild9.src;
                else if (num == "10" && active != 5) document['but5'].src=bild10.src;
                else if (num == "11") document['but5'].src=bild11.src;
                else if (num == "12" && active != 6) document['but6'].src=bild12.src;
                else if (num == "13") document['but6'].src=bild13.src;
                
}

function display2(num) {
	if (num == 0) document['but0'].src=bild0.src;
    else if (num == 2) document['but1'].src=bild2.src;
    else if (num == 4) document['but2'].src=bild4.src;
    else if (num == 6) document['but3'].src=bild6.src;
    else if (num == 8) document['but4'].src=bild8.src;
    else if (num == 10) document['but5'].src=bild10.src;
    else if (num == 12) document['but6'].src=bild12.src;
}

function swap() {
    if (document.images)
    {
       document['but0'].src=bild0.src;
       document['but1'].src=bild2.src;
       document['but2'].src=bild4.src;
       document['but3'].src=bild6.src;
       document['but4'].src=bild8.src;
       document['but5'].src=bild10.src;
       document['but6'].src=bild12.src;
       }
}

function init () {
	document['but0'].src = bild1.src;
}

function changeBut (folder) {
	if (active != 0) {
		var num2 = (active * 2);
		display2 (num2);
	} else display2 (0);
	
	if (folder == 45) {
		document['but1'].src = bild3.src;
		active = 1;
	} else if (folder == 43) {
		document['but2'].src = bild5.src;
		active = 2;
	} else if (folder == 44) {
		document['but3'].src = bild7.src;
		active = 3;
	} else if (folder == 46) {
		document['but4'].src = bild9.src;
		active = 4;
	} else if (folder == 49) {
		document['but5'].src = bild11.src;
		active = 5;
	} else if (folder == 50) {
		document['but6'].src = bild13.src;
		active = 6;
	} else if (folder == 0) {
		document['but0'].src = bild1.src;
		active = 0;
	}
	if (active != 0) var num1 = (active * 2) + 1;
	else num1 = 1;
	display1 (num1);
}