/* @author Alberto Di Paola */
function displayLevel(id, piuMenoImg, folderImg) {
	var menu = document.getElementById(id);
	var piuMenoImage = document.getElementById(piuMenoImg);
	var folderImage = document.getElementById(folderImg);
	var display = menu.style.display;
	if (piuImg.complete && openFolderImg.complete) {
		menu.style.display = (display == "block") ? "none" : "block";
		piuMenoImage.src = (display == "block") ? piuImg.src : menoImg.src;
		folderImage.src = (display == "block") ? closedFolderImg.src : openFolderImg.src;
	}
}

var preloadFlag = false;
var menoImg;
var piuImg;
var openFolderImg;
var closedFolderImg;

function preloadImages(path) {
	if(document.images) {
		menoImg = new Image();
	   	menoImg.src = path + "/meno.jpg";
		piuImg = new Image();
		piuImg.src = path + "/piu.jpg";
		openFolderImg = new Image();
		openFolderImg.src = path + "/folderOpen.gif";
		closedFolderImg = new Image();
		closedFolderImg.src = path + "/folderClosed.gif";
		preloadFlag = true;
	}

	var uls = document.getElementsByTagName("ul");
		for (i=0; i<uls.length; i++) {
			uls[i].style.display = "block";
	}
}

function searchContentCatalogue(formName, categoryId) {
	document.forms[formName].categoryId.value = categoryId;
	document.forms[formName].submit();
}