function sfHover() {
  if (document.getElementById("nav")) {
    var sfEls = document.getElementById("nav").getElementsByTagName("LI");
    for (var i=0; i<sfEls.length; i++) {
      sfEls[i].onmouseover=function() {
        this.className+=" sfhover";
      }
      sfEls[i].onmouseout=function() {
        this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
      }
    }
  }
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}
function initShowHide() {
  if (document.getElementById && document.getElementsByTagName && document.createTextNode) {
    document.getElementById('showLink').style.visibility = 'hidden';
    document.getElementById('showLink').style.left = horLoc;
    var hideLink = document.getElementById('hideLink').getElementsByTagName('a');
 var showLink = document.getElementById('showLink').getElementsByTagName('a');
    hideLink[0].onclick = function() {
      hide();
      return false;
    }
 showLink[0].onclick = function() {
      show();
      return false;
    }
  }
}
function hide() {
  document.getElementById('main').style.visibility = 'hidden';
  document.getElementById('nav').style.visibility = 'hidden';
  document.getElementById('hideLink').style.visibility = 'hidden';
  if(document.getElementById('headerLt')) document.getElementById('headerLt').style.visibility = 'hidden';
  if(document.getElementById('map_0')) document.getElementById('map_0').style.visibility = 'hidden';  
  if(document.getElementById('map_1')) document.getElementById('map_1').style.visibility = 'hidden';
  if(document.getElementById('map_2')) document.getElementById('map_2').style.visibility = 'hidden'; 
  if(document.getElementById('map_3')) document.getElementById('map_3').style.visibility = 'hidden'; 
  if(document.getElementById('map_4')) document.getElementById('map_4').style.visibility = 'hidden';     
  if(document.getElementById('moreabout')) document.getElementById('moreabout').style.visibility = 'hidden';   
  if(document.getElementById('header')) document.getElementById('header').style.visibility = 'hidden';  
  if(document.getElementById('cont')) document.getElementById('cont').style.visibility = 'hidden';
  if(document.getElementById('showLink')) document.getElementById('showLink').style.visibility = 'visible';
}
function show() {
  document.getElementById('main').style.visibility = 'visible';
  document.getElementById('nav').style.visibility = 'visible';
  document.getElementById('hideLink').style.visibility = 'visible';
  if(document.getElementById('headerLt')) document.getElementById('headerLt').style.visibility = 'visible';
  if(document.getElementById('map_0')) document.getElementById('map_0').style.visibility = 'visible';
  if(document.getElementById('map_1')) document.getElementById('map_1').style.visibility = 'visible';
  if(document.getElementById('map_2')) document.getElementById('map_2').style.visibility = 'visible';
  if(document.getElementById('map_3')) document.getElementById('map_3').style.visibility = 'visible';        
  if(document.getElementById('map_4')) document.getElementById('map_4').style.visibility = 'visible';
  if(document.getElementById('moreabout')) document.getElementById('moreabout').style.visibility = 'visible';  
  if(document.getElementById('header')) document.getElementById('header').style.visibility = 'visible';  
  if(document.getElementById('cont')) document.getElementById('cont').style.visibility = 'visible';
  if(document.getElementById('showLink')) document.getElementById('showLink').style.visibility = 'hidden';
}

if (window.attachEvent) window.attachEvent("onload", sfHover);
addLoadEvent(initShowHide);