var active = null;
var dhtml = (document.getElementById || document.all || document.layers);

//Fonction showbox
function showbox(pgnum,boxnum) {
	 var divshow,divhide;
		if (!dhtml) return
		pgnum = pgnum+'';
		boxnum = boxnum+'';
		if(active)divhide = "box"+pgnum+active;
		divshow = "box"+pgnum+boxnum;
		if (!dhtml) return
		if (active) {
		  if (document.getElementById) document.getElementById(divhide).style.visibility="hidden";
			if (document.layers) document.layers[divhide].visibility="hidden";
			if (document.all && !document.getElementById) document.all[divhide].style.visibility="hidden";
		}
	 if (document.getElementById) document.getElementById(divshow).style.visibility="visible";
	 if (document.layers) document.layers[divshow].visibility="visible";
	 if (document.all && !document.getElementById) document.all[divshow].style.visibility="visible";
		active = boxnum;
}
function getDocObj(elem,parent) {
		if (document.layers) {
			if (parent) { return "document."+parent+".document."+elem; }
		  else { return "document."+elem; }
		} 
		else if (document.all) {	return "document.all."+elem; }
		else if (document.getElementById) {	return "document.getElementById('"+elem+"')";	}
}

function getStyleObj(elem,parent) {
		if (document.layers) {
		  if (parent) { return "document."+parent+".document."+elem; }
		  else { return "document."+elem + ".style"; }
		} 
		else if (document.all) { return "document.all."+elem + ".style"; }
		else if (document.getElementById) { return "document.getElementById('"+elem+"').style"; }
}