// navigation functions

function navOn(navName) {
	if (document.getElementById) {
		if (document.getElementById(navName).className != 'nav-select') {
			document.getElementById(navName).style.background = '#800000';
		}
	}
}

function navOff(navName) {
	if (document.getElementById) {
		if (document.getElementById(navName).className != 'nav-select') {
			document.getElementById(navName).style.background = '#800000';
		}
	}
}

function dnavSelect(navName) {
	if (document.getElementById) {
		document.getElementById(navName).className = 'dnav-select';
	}
}

function dnavOn(navName) {
	if (document.getElementById) {
		if (document.getElementById(navName).className != 'dnav-select') {
			document.getElementById(navName).style.background = '#ede9e6';
		}
	}
}

function dnavOff(navName) {
	if (document.getElementById) {
		if (document.getElementById(navName).className != 'dnav-select') {
			document.getElementById(navName).style.background = '#ffffff';
		}
	}
}

function showMenu(divName) {
	if (document.getElementById) {
		document.getElementById(divName).style.display = 'block';
	}
}

function hideMenu(divName) {
	if (document.getElementById) {
		document.getElementById(divName).style.display = 'none';
	}
}


// content tabs change

function showContent1() {
	if (document.getElementById) {
		document.getElementById('content-tab-l-a').style.color = '#000000';
		document.getElementById('content-tab-r-a').style.color = '#800000';
		document.getElementById('content-tab-l').style.borderBottom = '1px solid #ffffff';
		document.getElementById('content-tab-l-p').style.borderTop = '4px solid #e44c16';
		document.getElementById('content-tab-r').style.borderBottom = '1px solid #e4e2cf';
		document.getElementById('content-tab-r').style.background = '#F8F6F5';
		document.getElementById('content-tab-l').style.background = '#FFFFFF';
		document.getElementById('content-tab-r-p').style.borderTop = '4px solid #c1b5aa';
		document.getElementById('content-info1').style.display = 'block';
		document.getElementById('content-info2').style.display = 'none';
	}
}

function showContent2() {
	if (document.getElementById) {
		document.getElementById('content-tab-l-a').style.color = '#800000';
		document.getElementById('content-tab-r-a').style.color = '#000000';
		document.getElementById('content-tab-l').style.borderBottom = '1px solid #e4e2cf';
		document.getElementById('content-tab-l-p').style.borderTop = '4px solid #c1b5aa';
		document.getElementById('content-tab-r').style.borderBottom = '1px solid #ffffff';
		document.getElementById('content-tab-r-p').style.borderTop = '4px solid #e44c16';
		document.getElementById('content-info1').style.display = 'none';
		document.getElementById('content-info2').style.display = 'block';
		document.getElementById('content-tab-r').style.background = '#FFFFFF';
		document.getElementById('content-tab-l').style.background = '#F8F6F5';
	}
}

// dropdown select location change
function sel(Url) {
	if (Url) {
  	window.open(Url,"_blank");
  }
}

// open a popup window
function openwin(url,w,h,s) {
  var scrl;
	if (s) { scrl="scrollbars=yes,"; w = w+16; }
	else { scrl="scrollbars=no,"; }

	if (!w) w = 640;
	if (!h) h = 480;

	fenster = window.open(url,"_blank",scrl+"resizable=yes,width="+w+",height="+h+",screenX=50,screenY=50");
	fenster.focus();
}

// font change functions

var fontsizeup_on = new Image();
fontsizeup_on.src = '/images/_common/icon-text-plus.jpg';
var fontsizeup_off = new Image();
fontsizeup_off.src = '/images/_common/icon-text-plus-inactive.jpg';
var fontsizeup_hover = new Image();
fontsizeup_hover.src = '/images/_common/icon-text-plus-hover.jpg';

var fontsizedown_on = new Image();
fontsizedown_on.src = '/images/_common/icon-text-minus.jpg';
var fontsizedown_off = new Image();
fontsizedown_off.src = '/images/_common/icon-text-minus-inactive.jpg';
var fontsizedown_hover = new Image();
fontsizedown_hover.src = '/images/_common/icon-text-minus-hover.jpg';

function fontsizeup() {
  active = getActiveStyleSheet();
  setActiveStyleSheet('large');
}

function fontsizedown() {
  active = getActiveStyleSheet();
  setActiveStyleSheet('reg');
}

function fontsizeOverOut(img_name, img_over, anchor_name){
	img = document.getElementById(img_name);
	a = document.getElementById(anchor_name);

	if(a.getAttribute('href')){
		img.src = img_over.src;
	}
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
  
  imgdown = document.getElementById('font-size-down-img');
  imgup = document.getElementById('font-size-up-img');

  adown = document.getElementById('font-size-down-a');
  aup = document.getElementById('font-size-up-a');

  if(imgdown && imgup){
	  if(title == 'large'){
		  imgdown.src = fontsizedown_on.src;
		  imgup.src = fontsizeup_off.src;
		  aup.removeAttribute('href');
		  adown.setAttribute('href','javascript:void(0)');
	  }else{
  		  imgdown.src = fontsizedown_off.src;
		  imgup.src = fontsizeup_on.src;
		  aup.setAttribute('href','javascript:void(0)');
		  adown.removeAttribute('href');
	  }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  return ('reg');
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

function styleSheetOnLoad() {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

function styleSheetOnUnload() {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
if (title == 'null') {
  title = getPreferredStyleSheet();
}

setActiveStyleSheet(title);


//hide/show lang dropdown when onmouseover/onmouseout on main navigation
function showHideLang(){
  if (document.getElementById){
    lang_container = document.getElementById('lang-container');
    if (lang_container) {
      if (lang_container.style.visibility == 'hidden'){
        lang_container.style.visibility = 'visible';
      } else {
        lang_container.style.visibility = 'hidden';
      }
    }
  }
}