var lastPointer = -1;
var pointer = -1;
var cases = Array();

function pubCase(id, title,contents, img) {
	this.id=id;
	this.title=title;
	this.contents = contents;
	this.img = img;
}

function random_case() {
	lastPointer = pointer;
	pointer = Math.round(Math.random()*(cases.length-1));
	show_case();
}
function next_case() {
	lastPointer = pointer;
	pointer++;
	if(pointer>=cases.length-1)
		pointer = cases.length-1;
	show_case();
}
function prev_case() {
	lastPointer = pointer;
	pointer--;
	if(pointer<0)
		pointer = 0;
	show_case();
}

function show_case() {
	var currentCase = cases[pointer];
	document.getElementById("publication-case-content").innerHTML = '<p><a href="/degrotemvobibliotheek/praktijkvoorbeelden/'+currentCase.id+'&id=1"><img src="/load_image.php?image=publications/images/'+currentCase.img+'"/></a></p><p><strong>Praktijkvoorbeeld: '+currentCase.title+'</strong></p><p>'+currentCase.contents + '</p><ul><li><a href="/degrotemvobibliotheek/praktijkvoorbeelden/'+currentCase.id+'">Lees meer &raquo;</a></li></ul>';	evaluatePointers()
}

function evaluatePointers()
{

	if(pointer==0)
		document.getElementById("prevCase").style.display= "none";
	if(pointer>=cases.length-1)
		document.getElementById("nextCase").style.display= "none";
		
	if(lastPointer==0)
		document.getElementById("prevCase").style.display= "";
	if(lastPointer>=cases.length-1)
		document.getElementById("nextCase").style.display= "";

}