// preload imgs

if (document.images) {

var nav_over = new Image()

nav_over.src = "../img/warrow.gif"



var nav_up = new Image()

nav_up.src = "../img/noarrow.gif"



var nav_yarrow = new Image()

nav_yarrow.src = "../img/yarrow.gif" }



// swap imgs

function swapimgs(id,name) {



document.images[id].src=eval(name+".src");

// alert(id)

}





// bild anzeigen

function show_img_info(bild,url,str,txt) {



document.images[bild].src=url;

document.info.strecke.value = str;

document.info.infotext.value = txt;



if (bild == 'dia_hoch') {

document.getElementById('dia_querformat').style.visibility='hidden';

document.getElementById('dia_querformat_rahmen').style.visibility='hidden';

document.getElementById('dia_hochformat').style.visibility='hidden';

document.getElementById('dia_hochformat_rahmen').style.visibility='visible';

}



else if (bild == 'dia_quer') {

document.getElementById('dia_hochformat').style.visibility='hidden';

document.getElementById('dia_hochformat_rahmen').style.visibility='hidden';

document.getElementById('dia_querformat').style.visibility='hidden';

document.getElementById('dia_querformat_rahmen').style.visibility='visible';

}



}



function show_img_onload_hoch() {

document.getElementById('dia_hochformat').style.visibility='visible';

}



function show_img_onload_quer() {

document.getElementById('dia_querformat').style.visibility='visible';

}







// feststellen



function deactive(first) { 

document.images[first].src="../img/noarrow.gif" ; }



function make_active(aktiver_link) { 

document.images[aktiver_link].src="../img/yarrow.gif" ; }





function streckenbilder(url) {



var winl = (screen.width - 557) / 2;

var wint = (screen.height - 546) / 2;

winprops = 'height='+546+',width='+557+',top='+wint+',left='+winl+',scrollbars='+'no'+',resizable='+'0';



win = window.open(url,'diashow', winprops)

if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }



// neues fenster zentriert

// Original:  Eric King (eric_andrew_king@hotmail.com)

// Web Site:  http://redrival.com/eak/

// This script and many more are available free online at

// The JavaScript Source!! http://javascript.internet.com



}