// JavaScript Document
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) { 
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages(path) {
	if (document.images) {
		campus_on = newImage(path+"images/campus-ON.gif");
		courses_on = newImage(path+"images/our-courses-ON.gif");
		how_to_arrive_on = newImage(path+"images/how_to_arrive-ON.gif");
		offers_on = newImage(path+"images/offers-ON.gif");
		flagES_on = newImage(path+"images/flagES-ON.gif");
		flagIT_on = newImage(path+"images/flagIT-ON.gif");
		flagEN_on = newImage(path+"images/flagEN-ON.gif");
		accomodations_on = newImage(path+"images/accomodations-ON.gif");
		our_teachers_on = newImage(path+"images/our-teachers-ON.gif");
		contact_us_on = newImage(path+"images/contact-us-ON.gif");
		home_on = newImage(path+"images/home-ON.gif"); 
		gallery_on = newImage(path+"images/gallery-ON.gif"); 
		links_on = newImage(path+"images/links-ON.gif"); 
		preloadFlag = true;
	}
}

var agt=navigator.userAgent.toLowerCase();
var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_gecko = (agt.indexOf('gecko') != -1);
var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
function toggleInfo(el) {

  var myelement = document.getElementById(el);
  var myimg = document.getElementById(el + "img");

  if( !myelement.style.display || myelement.style.display == "none" ) {
    if(is_ie)
			myelement.style.display = "inline";
		else
			myelement.style.display = "table-cell";
    myimg.src= myimg.src.substr(0,myimg.src.length-13) + "info_minus.png";
  } else {
    myelement.style.display = "none";
    myimg.src= myimg.src.substr(0,myimg.src.length-14) + "info_plus.png";
  }
}

function toggleNav(el) {
  var myelement = document.getElementById(el);
  var myimg = document.getElementById(el + "img");

  if( !myelement.style.display || myelement.style.display == "none" ) {
	for (i = 1; i <= 5; i++){
		document.getElementById("nav"+i+"img").src="images/nav_plus.gif";
		document.getElementById("nav"+i).style.display="none";
	}
	
	myelement.style.display = "inline";
	myimg.src= "images/nav_minus.gif";
  } else {
  	myelement.style.display = "none";
    myimg.src= "images/nav_plus.gif";
  }
}
var oldInd;
function toggleText(ind, text) {

  var myelement = document.getElementById("info");
  var nameelement = document.getElementById("title"+ind);
  var myimg = document.getElementById("img"+ind);

	if(oldInd!=null) {
		var oldNameEl = document.getElementById("title"+oldInd);
		var oldMyImg = document.getElementById("img"+oldInd);
		oldMyImg.src= "immagini/arrow1.gif";
    oldNameEl.style.fontWeight = "normal";
	}
	oldInd = ind;

	myelement.style.display = "inline";
	myelement.innerHTML = text;
	myimg.src= "immagini/arrow_on.gif";
	nameelement.style.fontWeight = "bold";
}