var finished=0;

function preLoad() {
        navhome1=new Image();
        navhome1.src="img/nav_home.gif";
        navhome1s=new Image();
        navhome1s.src="img/nav_homes.gif";

        navkontakt1=new Image();
        navkontakt1.src="img/nav_kontakt.gif";
        navkontakt1s=new Image();
        navkontakt1s.src="img/nav_kontakts.gif";
		
        navimpressum1=new Image();
        navimpressum1.src="img/nav_impressum.gif";
		navimpressum1s=new Image();
        navimpressum1s.src="img/nav_impressums.gif";
		
        navprofil1=new Image();
        navprofil1.src="img/nav_profil_l.gif";
        navprofil1s=new Image();
        navprofil1s.src="img/nav_profil_ls.gif";
		
        navspektrum1=new Image();
        navspektrum1.src="img/nav_spektrum_l.gif";
        navspektrum1s=new Image();
        navspektrum1s.src="img/nav_spektrum_ls.gif";

        navkunden1=new Image();
        navkunden1.src="img/nav_kunden_l.gif";
        navkunden1s=new Image();
        navkunden1s.src="img/nav_kunden_ls.gif";

        navnewsletter1=new Image();
        navnewsletter1.src="img/nav_kunden_l.gif";
        navnewsletter1s=new Image();
        navnewsletter1s.src="img/nav_newsletter_ls.gif";

		navbranchen1s=new Image();
        navbranchen1s.src="img/nav_branchen_ls.gif";
		navbranchen1=new Image();
        navbranchen1.src="img/nav_branchen_l.gif";

        finished=1;
}

var n=navigator;
var d=document;
var agent=n.userAgent.toLowerCase();

var sniff={
        bw:{
                ns:d.layers,
                ie:d.all&&!d.getElementById,
                ie4:agent.indexOf("msie 4.")!=-1,
                ie5:agent.indexOf("msie 5.")!=-1,
                ie6:agent.indexOf("msie 6.")!=-1,
                dom:d.getElementById,
                ns6:d.getElementById && agent.indexOf("gecko")!=-1
        },
        os:{
                win:agent.indexOf("win")!=-1,
                mac:agent.indexOf("mac")!=-1
        }
};

function switchImage(i,s) {
        if (finished==1) {
                var doc=document.images[i];
                doc.src=eval(i+"1"+s+".src");
        }
}

if (sniff.bw.ns) {
        if(!window.saveInnerWidth) {
          window.onresize = resizeIt;
          window.saveInnerWidth = window.innerWidth;
          window.saveInnerHeight = window.innerHeight;
        }
}

function resizeIt() {
    if (saveInnerWidth < window.innerWidth ||
        saveInnerWidth > window.innerWidth ||
        saveInnerHeight > window.innerHeight ||
        saveInnerHeight < window.innerHeight )
    {
        window.history.go(0);
    }
}