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(8);
        over = new MakeArray(8);
        down = new MakeArray(8);

      i_name=  new Array('home','absol','foerd','chron','news','bild','term','staff');

        off[1].src = "../images/buttons/home_sw.jpg";
        off[2].src = "../images/buttons/absol_sw.jpg";
        off[3].src = "../images/buttons/foerd_sw.jpg";
        off[4].src = "../images/buttons/chron_sw.jpg";
        off[5].src = "../images/buttons/news_sw.jpg";
        off[6].src = "../images/buttons/bild_sw.jpg";
        off[7].src = "../images/buttons/term_sw.jpg";
        off[8].src = "../images/buttons/staff_sw.jpg";
        
        over[1].src = "../images/buttons/home_gr.jpg";
        over[2].src = "../images/buttons/absol_gr.jpg";
        over[3].src = "../images/buttons/foerd_gr.jpg";
        over[4].src = "../images/buttons/chron_gr.jpg";
        over[5].src = "../images/buttons/news_gr.jpg";
        over[6].src = "../images/buttons/bild_gr.jpg";
        over[7].src = "../images/buttons/term_gr.jpg";
        over[8].src = "../images/buttons/staff_gr.jpg";
       

        down[1].src = "../images/buttons/home_or.jpg";
        down[2].src = "../images/buttons/absol_or.jpg";
        down[3].src = "../images/buttons/foerd_or.jpg";
        down[4].src = "../images/buttons/chron_or.jpg";
        down[5].src = "../images/buttons/news_or.jpg";
        down[6].src = "../images/buttons/bild_or.jpg";
        down[7].src = "../images/buttons/term_or.jpg";
        down[8].src = "../images/buttons/staff_or.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();

}