//swap layers gallery
var cur_lyrgallery = "";	// holds id of currently visible layer
function swapLayersGallery(id) {
	if (cur_lyrgallery != ""){
		MM_findObj(cur_lyrgallery).className = "hide";
	}
	MM_findObj(id).className = "";
	cur_lyrgallery = id;
}


//show hide layers
function DLD_ChangeStatus(aLayer){
	if ((objLayer=MM_findObj(aLayer))!=null) { 
		if (objLayer.style) {objLayer = objLayer.style; }
		objLayer.display = (objLayer.display =='none') ? '':'none'; 
	}
}
function DLD_ChangeStyle(aObj){
	aObj.className = (aObj.className =='selected') ? '':'selected'; 
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

var sxMenuTimeout = 3000;
var oldLayer = null;
var oldAnchor = null;
var classTimeout = null;
var subclassTimeout = null;
var oldStyle = null;

function DLD_openLayer(aLayer, aAnchor){
	if (oldLayer){
		/* Chiudo l'eventuale layer vecchio già aperto */
		MM_findObj(oldLayer).style.display = 'none';
		MM_findObj(oldAnchor).className = oldStyle;
	}

	var newLayer = MM_findObj(aLayer);
	var newAnchor = MM_findObj(aAnchor);

	/* Apro il nuovo layer  */
	newLayer.style.display = '';
	oldStyle = newAnchor.className;
	newAnchor.className = 'selected';
	
	/* Il vecchio layer diventa quello appena aperto */
	oldLayer = aLayer;
	oldAnchor = aAnchor;
	
	var catLayer = MM_findObj(aAnchor);
	var objLayer = MM_findObj(aLayer);
	
}

function closeClassLayer(){
	classTimeout = setTimeout('DLD_closeLayer("class")', sxMenuTimeout);
}

function closeSubClassLayer(){
	subclassTimeout = setTimeout('DLD_closeLayer("subclass")', sxMenuTimeout);
}

function DLD_resetTimers(){
	DLD_resetClassTimer();
	DLD_resetSubClassTimer();
}

function DLD_resetClassTimer(){
	if (classTimeout) {
		clearTimeout(classTimeout);
		classTimeout = 0;
	}
}

function DLD_resetSubClassTimer(){
	if (subclassTimeout) {
		clearTimeout(subclassTimeout);
		subclassTimeout = 0;
	}
}

function DLD_closeLayer(sOrigine){
	/* Chiudo l'eventuale layer vecchio già aperto */
	if ((sOrigine == 'class') && classTimeout){
		if (oldLayer){
			MM_findObj(oldLayer).style.display = 'none';
			MM_findObj(oldAnchor).className = oldStyle;
		}
	}
	
	if ((sOrigine == 'subclass') && subclassTimeout){
		if (oldLayer){
			MM_findObj(oldLayer).style.display = 'none';
			MM_findObj(oldAnchor).className = oldStyle;
		}
	}
	
	oldLayer = null;
	oldAnchor = null;
}