var groesse = 's';
var Stil = "l";
var Keks = "Layout";
var Tage = 30;
var sw = 'l';
// Style Switcher


function getW() {
	var x,y;
	if (self.innerHeight) // all except Explorer
	{
		x = self.innerWidth;
		y = self.innerHeight;
		}
		else if (document.documentElement && document.documentElement.clientHeight)
			// Explorer 6 Strict Mode
			{
				x = document.documentElement.clientWidth;
					y = document.documentElement.clientHeight;
					}
					else if (document.body) // other Explorers
					{
						x = document.body.clientWidth;
							y = document.body.clientHeight;
							}
	return x;							
}



							

function switchStyle(s) {
  if (!document.getElementsByTagName) return;
  var el = document.getElementsByTagName("link");
  for (var i = 0; i < el.length; i++ ) {
    if (el[i].getAttribute("rel").indexOf("style") != -1 && el[i].getAttribute("title")) {
      el[i].disabled = true;
      if (el[i].getAttribute("title") == s) el[i].disabled = false;
    }
  }
}

function loadStyle() {
  var c = getStyleCookie();

  if (!c)
  	Stil = 'l';
  else
  	Stil = c;

  setStyle(Stil);
}

function setStyle(s) {
  if (!s) {
    if (Stil == 'xl')
      Stil = 'xxl';
    else {
      if (Stil == 'xxl')
        Stil = 'l';
      else
        Stil = 'xl';
    }
  } else {
    Stil = s;
  }

  if (getW() > 1250) sw = 'l'; else sw = 's';

  //alert(getW() + '_' + sw + '_' + Stil);
  setStyleCookie();	
  switchStyle(sw + '_' + Stil);

  var id;
  if (getE('menu_level3')) {
	  id = 'menu_level3';
  } else {
	  id = 'tankmap_picture';
	  if (getW() > 1250) {
		getE('tankmap').style.backgroundImage='none';
		getE('tankmap_toppiece').style.backgroundImage='none';
	}
  }
  element = document.getElementById(id);

  //#alert(header_s);
  if (sw == 'l') {
	  element.style.backgroundImage = 'url('+header_l+')';
  } else {
  	  element.style.backgroundImage = 'url('+header_s+')';
  }
}

//window.onload = loadStyle;
//window.onresize = setStyle();

// Cookie-Funktionen

function setCookie(name, value, expdays) {   // gültig expdays Tage
  var now = new Date();
  var exp = new Date(now.getTime() + (1000*60*60*24*expdays));
  document.cookie = name + "=" + escape(value) + ";" +
                    "expires=" + exp.toGMTString() + ";" +
                    "path=/";
}

function delCookie(name) {   // expires ist abgelaufen
  var now = new Date();
  var exp = new Date(now.getTime() - 1);
  document.cookie = name + "=;" +
                    "expires=" + exp.toGMTString() + ";" + 
                    "path=/";
}

function getCookie(name) {
  var cname = name + "=";
  var dc = document.cookie;
  if (dc.length > 0) {
    var start = dc.indexOf(cname);
    if (start != -1) {
      start += cname.length;
      var stop = dc.indexOf(";", start);
      if (stop == -1) stop = dc.length;
      return unescape(dc.substring(start,stop));
    }
  }
  return null;
}

function setStyleCookie() {
  setCookie(Keks, Stil, Tage);
}

function getStyleCookie() {
  return getCookie(Keks);
}

function delStyleCookie() {
  delCookie(Keks);
}