/*****
  \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
  /////////////////////////////////////////////////////////////////////////////
 based on the lightbox script by Lokesh Dhakar - http://www.huddletogether.com
/////////////////////////////////////////////////////////////////////////////
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
* script om alle links naar showImage() te pakken 
****/
focusPics = new Array();

function checkFocusLinks() {
    var as,i,isRef,le_link;
    as=document.getElementsByTagName('a');
    var u=0;
    for(i=0;i<as.length;i++) {
        isRef=as[i].rel;
        if(isRef.indexOf('focus')==0) {
            le_link = as[i].href;
            focusPics[u]=le_link;
            as[i].onclick=function() {
                showImage(this);
                return false; 
            };
            u++;
        }
    }
}

/*****
* ZET FOTOFOCUS AAN
- overlay div is zichtbaar
- pic_focus div is zichtbaar
- text div is onzichtbaar
****/

function showImage(the_link) {
  // loader aanslingeren
    document.images['show_pic'].src = '_img/loader.gif';
  // checken of er een video actief is, dan die div verbergen en img#show_pic visible
    if(document.getElementById('vid_display')) {
        document.getElementById('vid_display').style.display='none';
        document.getElementById('show_pic').style.display='block';
    }
  // laat de pic + eventuele caption zien
    captionSpan = document.getElementById('gallery_caption');
    if(the_link.getAttribute('title')) {
        captionSpan.innerHTML = the_link.getAttribute('title');
    } else {
        captionSpan.innerHTML = '';
    }
    var url=the_link.href;
    document.images['show_pic'].src = url;
}


/*****
* script voor de SWITCHING show/hide divs 
****/
function toggleDiv(divName, divName2) {
    thisDiv = document.getElementById(divName);
	thisDiv2 = document.getElementById(divName2);
    if (thisDiv) {
        if (thisDiv.style.display == "none") {
            thisDiv.style.display = "block";
        } else {
            thisDiv.style.display = "none";
        }
    }
    if (thisDiv2) {
        if (thisDiv2.style.display == "block") {
            thisDiv2.style.display = "none";
        } else {
            thisDiv2.style.display = "block";
        }
    }
   // alert(thisDiv2);
    if(divName2=='pic_focus') {
        document.images['show_pic'].src = focusPics[0];
        setOverLay();
  // overlay laten zien
        var overlayDiv = document.getElementById('overlay');
        overlayDiv.style.display = 'block';
        document.body.style.overflowX='hidden';
    } else {
        document.images['show_pic'].src = '_img/loader.gif';
    }
}
// addLoadEvent()
// Adds event to window.onload without overwriting currently assigned onload functions.
// Function found at Simon Willison's weblog - http://simon.incutio.com/
//
function addLoadEvent(func)
{	
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}

}
addLoadEvent(checkFocusLinks);