var type = "IE"; // Variable used to hold the browser name

detectBrowser();

function detectBrowser() {
  if (window.opera && document.readyState) {
    type="OP"; // The surfer is using Opera of some version
  } else if (document.all) {
    type="IE"; // The surfer is using IE 4+
  } else if (document.layers) {
    type="NN"; // The surfer is using NS 4
  } else if (!document.all && document.getElementById) {
    type="MO"; // The surfer is using NS6+ or Firefox
  } else {
    type="IE"; // I assume it will not get here
  }
}

/*****************************************************************************/

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

/*****************************************************************************/

var exifVisible = false;
var sidebarVisible = false;

function setLayer(obj,lyr) {
  var newX = findPosX(obj)+5;
  var newY = findPosY(obj)+5;
  var x = new getObj(lyr);
  x.style.top = newY + 'px';
  x.style.left = newX + 'px';
}

function findPosX(obj) {
  var curleft = 0;

  if (!obj) { return curleft; }
  if (obj.offsetParent) {
    while (obj.offsetParent) {
      curleft += obj.offsetLeft
      obj = obj.offsetParent;
    }
  } else if (obj.x) {
    curleft += obj.x;
  }
  return curleft;
}

function findPosY(obj) {
  var curtop = 0;
  var printstring = '';

  if (!obj) { return curtop; }
  if (obj.offsetParent) {
    while (obj.offsetParent) {
      printstring += ' element ' + obj.tagName + ' has ' + obj.offsetTop;
      curtop += obj.offsetTop
      obj = obj.offsetParent;
    }
  } else if (obj.y) {
    curtop += obj.y;
  }
  window.status = printstring;
  return curtop;
}

function getObj(id) {
  if (type=="IE") {
    this.obj = document.all[id];
    this.style = document.all[id].style;
  } else if (type=="MO" || type=="OP") {
    this.obj = document.getElementById(id);
    this.style = document.getElementById(id).style;
  } else if (type=="NN") {
    if (document.layers[id]) {
      this.obj = document.layers[id];
      this.style = document.layers[id];
    }
  }
}

function toggleExif(parentId, id) {
  var parent = document.getElementById(parentId);

  MM_showHideLayers(id,'',(exifVisible) ? 'hide' : 'show');
  setLayer(parent,id);

  exifVisible = !exifVisible;
}

function toggleSidebar(parentId, id) {
  var parent = document.getElementById(parentId);

  MM_showHideLayers(id,'',(sidebarVisible) ? 'hide' : 'show');
  setLayer(parent,id);
 
  sidebarVisible = !sidebarVisible;
}


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