var DOM=(document.createElement && document.getElementsByTagName);
var browser=navigator.userAgent.toLowerCase();
var ie=((browser.indexOf("msie") != -1) && (browser.indexOf("opera") == -1));
var dir='images/navigation/';
function navi_preload() {
	var np1_img=new Image(); np1_img.src=dir + 'home_hover.png';
	var np2_img=new Image(); np2_img.src=dir + 'unternehmen_hover.png';
	var np3_img=new Image(); np3_img.src=dir + 'leistungen_hover.png';
	var np4_img=new Image(); np4_img.src=dir + 'produkte_hover.png';
	var np5_img=new Image(); np5_img.src=dir + 'kontakt_hover.png';
} function navi_hover(active,object) {
	var new_img=new Image();
	if(active) new_img.src=dir + object.id + '.png';
	else new_img.src=dir + object.id + '_hover.png';
	object.src=new_img.src;
} function w_height() {
	if(window.innerHeight) return window.innerHeight;
	if(document.body.offsetHeight == document.body.clientHeight && document.documentElement && document.documentElement.clientHeight) return document.documentElement.clientHeight;
	return document.body.clientHeight;
} function w_width() {
	if(window.innerWidth) return window.innerWidth;
	if(document.body.offsetWidth == document.body.clientWidth && document.documentElement && document.documentElement.clientWidth) return document.documentElement.clientWidth;
	return document.body.clientWidth;
} var showimg_w=798;
var showimg_h=500;
var showimg_pos=0;
var showimg_pos2=0;
function showimgf(showimg_id,showimg_id2,fullsize) {
	showimg_pos=showimg_id; showimg_pos2=showimg_id2;
	showimg_w=showimga[showimg_id][showimg_id2][1];
	showimg_h=showimga[showimg_id][showimg_id2][2];
	if(ie) document.getElementById('showimglayer').style.height=document.documentElement.clientHeight;
	var resized=(document.getElementById('showimg').width == showimg_w) ? true : false;
	document.getElementById('showimg').src='images/' + showimga[showimg_id][showimg_id2][0];
	document.getElementById('showimglayer').style.display='block';
	if(fullsize == 1) resized=true; if(fullsize == 2) resized=false;
	if(ie && !fullsize) resized=true;
	if(resized) {
		document.getElementById('showimgbox').style.width=showimg_w+'px';
		document.getElementById('showimgbox').style.height=showimg_h+'px';
		document.getElementById('showimgbox2').style.width=showimg_w+'px';
		document.getElementById('showimgbox2').style.height=(showimg_h+1)+'px';
		document.getElementById('showimgbox').style.margin='-' + Math.round((showimg_h / 2) + 21) + 'px 0px 0px -' + Math.round(showimg_w / 2) + 'px';
		document.getElementById('showimg').style.width=showimg_w+'px';
		document.getElementById('showimg').style.height=showimg_h+'px';
		document.getElementById('showimg_resize').innerHTML='Vergrößern';
	} else {
		var tmp_w=(showimga[showimg_id][showimg_id2][3]) ? showimga[showimg_id][showimg_id2][3] : 798;
		var tmp_h=(showimga[showimg_id][showimg_id2][4]) ? showimga[showimg_id][showimg_id2][4] : 500;
		document.getElementById('showimgbox').style.width=tmp_w + 'px';
		document.getElementById('showimgbox').style.height=tmp_h + 'px';
		document.getElementById('showimgbox2').style.width=tmp_w + 'px';
		document.getElementById('showimgbox2').style.height=(tmp_h+1) + 'px';
		document.getElementById('showimgbox').style.margin='-' + Math.round((tmp_h / 2) + 21) + 'px 0px 0px -' + Math.round(tmp_w / 2) + 'px';
		document.getElementById('showimg').style.width='auto';
		document.getElementById('showimg').style.height='auto';
		document.getElementById('showimg_resize').innerHTML='Verkleinern';
	} document.getElementById('showimg_back').style.display=(!showimg_pos2) ? 'none' : 'block';
	document.getElementById('showimg_forward').style.display=((showimg_pos2+1) >= showimga[showimg_id].length) ? 'none' : 'block';
} var ssize=11;
function sgroesse(adjust) {
	if(adjust == '+') ssize=ssize+1;
	else ssize=ssize-1;
	document.getElementById('content').style.fontSize=ssize + 'px';
}