document.getElementsByClassName = function(){
if(document.hasChildNodes && arguments[0]){
var data = new Array();
for(a=0;a<document.getElementsByTagName("*").length;a++){
if(document.getElementsByTagName("*")[a].className == arguments[0]){
data.push(document.getElementsByTagName("*")[a]);
}
}
return data;
}
}


function slideshowref() {
	a = document.getElementById("conteneur_references");
	b = document.getElementsByClassName("panel");
	c = b.length;
	h=0;
} 

function nav_dref() {
	if (h<c-1) {
		new Effect.Fade(b[h], { duration: 0.5, queue: { position: 'front', scope: 'faddingtool', limit: 0 } } );
		new Effect.Appear(b[h+1], { duration: 0.5, queue: { position: 'front', scope: 'appeartool', limit: 0 } } );
		h++;
		document.getElementsByClassName("navPrecedent")[0].style.display = "inline";
	}
	if (h>c-2) { document.getElementsByClassName("navSuivant")[0].style.display = "none"; }
}
function nav_gref() {
	if (h>0) {
		new Effect.Fade(b[h], { duration: 0.5, queue: { position: 'front', scope: 'faddingtool', limit: 0 } } );
		new Effect.Appear(b[h-1], { duration: 0.5, queue: { position: 'front', scope: 'appeartool', limit: 0 } } );
		h--;
		document.getElementsByClassName("navSuivant")[0].style.display = "inline";
	}
	if (h<1) { document.getElementsByClassName("navPrecedent")[0].style.display = "none"; }
}