var docX=0, docY=0; //aktuální pozice kurzoru na stránce
var startDocX=0, startdocY=0;

var _lightBoxSettings = {
	imageLoading: './img/img-lightbox/lightbox-ico-loading.gif',
	imageBtnClose: './img/img-lightbox/lightbox-btn-close.gif',
	imageBtnPrev: './img/img-lightbox/lightbox-btn-prev.gif',
	imageBtnNext: './img/img-lightbox/lightbox-btn-next.gif',
	imageBlank: './img/img-lightbox/lightbox-blank.gif',
	txtImage: 'Obrázek',
	txtOf: 'z'
};

function init() {
	document.onmousemove = showMousePos;
}

function showMousePos(e) {
	if (!e) e = event; // make sure we have a reference to the event
	var input = document.getElementById('mousepos');
	var mp = getMousePosition(e);
	docX = mp.x;
	docY = mp.y;
}

function getMousePosition(e) {
	return e.pageX ? {'x':e.pageX, 'y':e.pageY} : {'x':e.clientX + document.documentElement.scrollLeft + document.body.scrollLeft, 'y':e.clientY + document.documentElement.scrollTop + document.body.scrollTop}
}

function prev(path,name,year,photographer) {
  document.getElementById("prev").style.display="block";
  try {
	document.getElementById("info").innerHTML=name+"<br />"+year+"<br />"+photographer;
  } catch(e) {}
  document.getElementById("prev_back").style.background = "#ffffff url("+path+") no-repeat center";
  init();
  pleft=docX;
  ptop=docY;  
  if (navigator.appName.indexOf('Microsoft')>=0) {
    pleft=pleft-40;
    ptop=ptop-32;
  }
  document.getElementById("prev").style.left=(pleft+2)+"px";
  document.getElementById("prev").style.top=(ptop+2)+"px";
}

function hide_prev(id) {
  var id = (id) ? id : 'prev';
  document.getElementById(id).style.display="none";
}