function nav (x) {
var banner = document.getElementById('header-img').style;
var links = document.getElementsByTagName("a");

if(x.substr(1)>=9 && x.substr(1)<=13){banner.backgroundImage = "url(/masks/autoart/img/head-pic-motorbike.png)";var setbg=1;}
if(x.substr(1)>=16 && x.substr(1)<=20){banner.backgroundImage = "url(/masks/autoart/img/head-pic-motorbike.png)";var setbg=1;}
if(x.substr(1)>=21 && x.substr(1)<=22){banner.backgroundImage = "url(/masks/autoart/img/head-pic-motorbike.png)";var setbg=1;}
if(x.substr(1)>=23 && x.substr(1)<=26){banner.backgroundImage = "url(/masks/autoart/img/head-pic-motorbike.png)";var setbg=1;}

if(setbg!=1){banner.backgroundImage = "url(/masks/autoart/img/head-pic-motorbike.png)";}
for (var i = 0; i < links.length; i++){links[i].className = "";links[i].style.display = "";}

if(x.substr(1)<27){for(j = x.substr(1);j>0;j--){
if(document.getElementById('sub'+j)){
var links = document.getElementById('sub'+j).getElementsByTagName("a");
for (var i = 0; i < links.length; i++){links[i].style.display = "block";}
j=0;}
}}

document.getElementById(x).className = "active";
}

//function doResize(){
//var newheight = innerHeight - 210 ;
//document.getElementById('iframe').style.height = newheight +'px' ;
//}
function csskill(){
var indexmenu = document.getElementById('index-menu').getElementsByTagName("li");
for (var i = 0; i < indexmenu.length; i++){indexmenu[i].className = "hover";}
}




function neusetactive(aid)
{
    document.getElementById('neuheit1').className = "";
    document.getElementById('neuheit2').className = "";
    document.getElementById('neuheit3').className = "";
    document.getElementById('neuheit4').className = "";
    document.getElementById('neuheit5').className = "";
    document.getElementById('neuheit6').className = "";
    document.getElementById(aid).setAttribute('class','active');    
}