function back()
{
	for(i=0;i<i_name.length;i++)
	{
	 	document.images[i_name[i]].src = off[(i+1)].src;
	}
	act_img='';
	act_nr=0;
}
	 	
if (document.images){
        var act_img ="";
        var act_nr =0;
        off = new MakeArray(11);
        over = new MakeArray(11);
        down = new MakeArray(11);

      i_name=  new Array('news','term','absolv','verein','greg','home','bildung','studiengangob','reper','staff','ktanz');

        off[1].src = "../images/buttons/news_on.jpg";
        off[2].src = "../images/buttons/term_on.jpg";
        off[3].src = "../images/buttons/absolv_on.jpg";
        off[4].src = "../images/buttons/verein_on.jpg";
        off[5].src = "../images/buttons/greg_on.jpg";
        off[6].src = "../images/buttons/home_on.jpg";
        off[7].src = "../images/buttons/bildung_on.jpg";
        off[8].src = "../images/buttons/studiengangob_on.jpg";
        off[9].src = "../images/buttons/reper_on.jpg";
        off[10].src = "../images/buttons/staff_on.jpg";
        off[11].src = "../images/buttons/kinder_neu_on.jpg";

        over[1].src = "../images/buttons/news_ov.jpg";
        over[2].src = "../images/buttons/term_ov.jpg";
        over[3].src = "../images/buttons/absolv_ov.jpg";
        over[4].src = "../images/buttons/verein_ov.jpg";
        over[5].src = "../images/buttons/greg_ov.jpg";
        over[6].src = "../images/buttons/home_ov.jpg";
        over[7].src = "../images/buttons/bildung_ov.jpg";
        over[8].src = "../images/buttons/studiengangob_ov.jpg";
        over[9].src = "../images/buttons/reper_ov.jpg";
        over[10].src = "../images/buttons/staff_ov.jpg";
        over[11].src = "../images/buttons/kinder_neu_ov.jpg";


        down[1].src = "../images/buttons/news_d.jpg";
        down[2].src = "../images/buttons/term_d.jpg";
        down[3].src = "../images/buttons/absolv_d.jpg";
        down[4].src = "../images/buttons/verein_d.jpg";
        down[5].src = "../images/buttons/greg_d.jpg";
        down[6].src = "../images/buttons/home_d.jpg";
        down[7].src = "../images/buttons/bildung_d.jpg";
        down[8].src = "../images/buttons/studiengangob_d.jpg";
        down[9].src = "../images/buttons/reper_d.jpg";
        down[10].src = "../images/buttons/staff_d.jpg";
        down[11].src = "../images/buttons/kinder_neu_d.jpg";


}

function MakeArray(n){

        this.length = n
        for (var i = 1; i<=n; i++)
        {
                this[i] = new Image()
        }
                return this;
}


function wechsel(name, nr)
{
        if (document.images && (act_img != name && act_nr != nr))
        {
                document.images[name].src = over[nr].src;
        }

}

function wech(name, nr){
        if (document.images && (act_img != name && act_nr != nr))
        {
                document.images[name].src = off[nr].src;
        }

}

function active_img(name, nr)
{
 if(act_img)
 {

     document.images[act_img].src = off[act_nr].src;

 }
 document.images[name].src = down[nr].src;
 act_img = name;
 act_nr= nr;
 
 if (parent.rechts.act_img!=""){
	//alert(parent.rechts.document.images[parent.rechts.act_img].src);
 parent.rechts.document.images[parent.rechts.act_img].src = parent.rechts.off[parent.rechts.act_nr].src;
 }
}


function ZweiFrames(URL1,F1,URL2,F2){  

   Frame1=eval("parent."+F1);
   Frame2=eval("parent."+F2);
   Frame1.location.href = URL1;
   Frame2.location.href = URL2;
   }

function fenster()
{

win=window.open("form1.html","stadtplan","locationbar=0,scrollbars=no,Width=420,Height=450");
win.focus();

}