var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_navi_off_01 = newImage('images/navi/navi_off_01.gif');
		pre_navi_off_02 = newImage('images/navi/navi_off_02.gif');
		pre_navi_off_03 = newImage('images/navi/navi_off_03.gif');
		pre_navi_off_04 = newImage('images/navi/navi_off_04.gif');
		pre_navi_off_05 = newImage('images/navi/navi_off_05.gif');
		pre_navi_off_06 = newImage('images/navi/navi_off_06.gif');

		pre_navi_over_01 = newImage('images/navi/navi_over_01.gif');
		pre_navi_over_02 = newImage('images/navi/navi_over_02.gif');
		pre_navi_over_03 = newImage('images/navi/navi_over_03.gif');
		pre_navi_over_04 = newImage('images/navi/navi_over_04.gif');
		pre_navi_over_05 = newImage('images/navi/navi_over_05.gif');
		pre_navi_over_06 = newImage('images/navi/navi_over_06.gif');

		pre_subnavi_on_01 = newImage('images/navi/subnavi_on_01.gif');
		pre_subnavi_on_02 = newImage('images/navi/subnavi_on_02.gif');
		pre_subnavi_on_03 = newImage('images/navi/subnavi_on_03.gif');
		preloadFlag = true;
	}
}


function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesArray(array) {
	if (preloadFlag == true) {
		var d = document; var img;
		for (var i=0; i<array.length; i+=2) {
			img = null; var n = array[i];
			if (d.images) {img = d.images[n];}
			if (!img && d.getElementById) {img = d.getElementById(n);}
			if (img) {img.src = array[i+1];}
		}
	}
}

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function grossansicht(url){
    breite=550;
    hoehe=550;
    pos="";

    if(pos=="right"){
        oben=24;
        links=window.screenLeft+document.body.offsetWidth;
        if(links+breite>screen.width)links=screen.width-breite-12;
    }
    else{
        if(pos=="left"){
            oben=0;
            links=0;
        }
        else{
            oben=screen.height/2-hoehe/2;

            li=screen.width/2-breite/2 - 12;

        }
    }
    windowprops = "height="+hoehe+",width="+breite+",left="+li+",top="+oben
                + "location=no,scrollbars=no,menubars=no,toolbars=no,resizable=yes,status=no";

    grossansicht = window.open(url, "grossansicht", windowprops);
    grossansicht.focus();
    

}