function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

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;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function popup(url,width,height,title) {
window.open(url,'_blank','top=0,left=0,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width='+width+',height='+height)
}

function NewWindow2(mypage, myname, wid, heig, scroll) 
{
	var winl = (screen.width - wid) / 2;
	var wint = (screen.height - heig) / 2;
	winprops = 'height='+heig+',width='+wid+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
	win = window.open(mypage, myname, winprops)
	
	if (parseInt(navigator.appVersion) >= 4) 
		win.window.focus(); 
}

/*-----------Flash------------------*/
function AC_AddExtension(src, ext)
{
  if (src.indexOf('?') != -1)
    return src.replace(/\?/, ext+'?'); 
  else
    return src + ext;
}

function AC_Generateobj(objAttrs, params, embedAttrs) 
{ 
  var str = '<object ';
  for (var i in objAttrs)
    str += i + '="' + objAttrs[i] + '" ';
  str += '>';
  for (var i in params)
    str += '<param name="' + i + '" value="' + params[i] + '" /> ';
  str += '<embed ';
  for (var i in embedAttrs)
    str += i + '="' + embedAttrs[i] + '" ';
  str += ' ></embed></object>';

  document.write(str);
}

function AC_FL_RunContent(){
  var ret = 
    AC_GetArgs
    (  arguments, ".swf", "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
     , "application/x-shockwave-flash"
    );
  AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

function AC_SW_RunContent(){
  var ret = 
    AC_GetArgs
    (  arguments, ".dcr", "src", "clsid:166B1BCA-3F9C-11CF-8075-444553540000"
     , null
    );
  AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

function AC_GetArgs(args, ext, srcParamName, classid, mimeType){
  var ret = new Object();
  ret.embedAttrs = new Object();
  ret.params = new Object();
  ret.objAttrs = new Object();
  for (var i=0; i < args.length; i=i+2){
    var currArg = args[i].toLowerCase();    

    switch (currArg){	
      case "classid":
        break;
      case "pluginspage":
        ret.embedAttrs[args[i]] = args[i+1];
        break;
      case "src":
      case "movie":	
        args[i+1] = AC_AddExtension(args[i+1], ext);
        ret.embedAttrs["src"] = args[i+1];
        ret.params[srcParamName] = args[i+1];
        break;
      case "onafterupdate":
      case "onbeforeupdate":
      case "onblur":
      case "oncellchange":
      case "onclick":
      case "ondblClick":
      case "ondrag":
      case "ondragend":
      case "ondragenter":
      case "ondragleave":
      case "ondragover":
      case "ondrop":
      case "onfinish":
      case "onfocus":
      case "onhelp":
      case "onmousedown":
      case "onmouseup":
      case "onmouseover":
      case "onmousemove":
      case "onmouseout":
      case "onkeypress":
      case "onkeydown":
      case "onkeyup":
      case "onload":
      case "onlosecapture":
      case "onpropertychange":
      case "onreadystatechange":
      case "onrowsdelete":
      case "onrowenter":
      case "onrowexit":
      case "onrowsinserted":
      case "onstart":
      case "onscroll":
      case "onbeforeeditfocus":
      case "onactivate":
      case "onbeforedeactivate":
      case "ondeactivate":
      case "type":
      case "codebase":
        ret.objAttrs[args[i]] = args[i+1];
        break;
      case "width":
      case "height":
      case "align":
      case "vspace": 
      case "hspace":
      case "class":
      case "title":
      case "accesskey":
      case "name":
      case "id":
      case "tabindex":
        ret.embedAttrs[args[i]] = ret.objAttrs[args[i]] = args[i+1];
        break;
      default:
        ret.embedAttrs[args[i]] = ret.params[args[i]] = args[i+1];
    }
  }
  ret.objAttrs["classid"] = classid;
  if (mimeType) ret.embedAttrs["type"] = mimeType;
  return ret;
}


/**
 * ITA:Restituisce la distanza in px del bordo sinistro dell'elemento dal bordo sinistro della finestra
 * ENG: Return the px distance from left border of the element to left border of the window 
 **/
function getElementLeft(p_elm) {
	var x = 0;
	var elm;
	if(typeof(p_elm) == "object"){
		elm = p_elm;
	} else {
		elm = document.getElementById(p_elm);
	}
	while (elm != null) {
		x+= elm.offsetLeft;
		elm = elm.offsetParent;
	}
	return parseInt(x);
}

/**
 * ITA: Restituisce la larghezza dell'elemento in px
 * ENG: Return the px width of the element 
 **/
function getElementWidth(p_elm){
	var elm;
	if(typeof(p_elm) == "object"){
		elm = p_elm;
	} else {
		elm = document.getElementById(p_elm);
	}
	return parseInt(elm.offsetWidth);
}

/**
 * ITA: Restituisce la distanza in px del bordo destro dell'elemento dal bordo sinistro della finestra
 * ENG: Return the px distances from right border of the element to left border of window
 **/
function getElementRight(p_elm){
	return getElementLeft(p_elm) + getElementWidth(p_elm);
}

/**
 * ITA: Restituisce la distanza in px del bordo superiore dell'elemento dal bordo superiore della finestra
 * ENG: Return the px distances from top border of the element to top border of the window
 **/
function getElementTop(p_elm) {
	var y = 0;
	var elm;
	if(typeof(p_elm) == "object"){
		elm = p_elm;
	} else {
		elm = document.getElementById(p_elm);
	}
	while (elm != null) {
		y+= elm.offsetTop;
		elm = elm.offsetParent;
	}
	return parseInt(y);
}

/**
 * ITA: Restituisce l'altezza dell'elemento in px
 * ENG: Return the px heght of the element
 **/
function getElementHeight(p_elm){
	var elm;
	if(typeof(p_elm) == "object"){
		elm = p_elm;
	} else {
		elm = document.getElementById(p_elm);
	}
	return parseInt(elm.offsetHeight);
}

/**
 * ITA: Restituisce la distanza in px del bordo inferiore dell'elemento dal bordo superiore della finestra
 * ENG: Return the px distances from bottom border of the element to border top of the window
 **/
function getElementBottom(p_elm){
	return getElementTop(p_elm) + getElementHeight(p_elm);
}

/**
 * ITA: Restituisce una propriet?dello stile dell'elemento, null se non esiste
 * ENG: Return a style property of the elemnt , it return null if does not exist
 **/
function getElementProperty(p_elm, p_property){
	var elm = null;
	if(typeof(p_elm) == "object"){
		elm = p_elm;
	} else {
		elm = document.getElementById(p_elm);
	}
	if (elm != null){
		if(elm.style){
			elm = elm.style;
			if(elm[p_property]){
				return elm[p_property];
			} else {
				return null;
			}
		} else {
			return null;
		}
	}
}

/**
 * ITA: Setta una propriet?dello stype dell'elemento
 * ENG: Set a property of style type of the element
 **/
function setElementProperty(p_elm, p_property, p_value){
	var elm = null;
	if(typeof(p_elm) == "object"){
		elm = p_elm;
	} else {
		elm = document.getElementById(p_elm);
	}
	if((elm != null) && (elm.style != null)){
		elm = elm.style;
		elm[ p_property ] = p_value;
	}
}
/************************/

var timer = "";
var openMenu = null;
var canMenuBeClosed = true;

function clearTimer(){
	window.clearTimeout(timer);
}

function tryToClose(){
	var funcToCall = "canMenuBeClosed = true"
	timer = window.setTimeout(funcToCall, 0);
}

function showMenu(id,objPos){
	if(document.getElementById){
		clearTimer();
		document.getElementById("menu1_src").src="images/nav_about.gif"
		document.getElementById("menu2_src").src="images/nav_research.gif"
		document.getElementById("menu3_src").src="images/nav_academic.gif"
		document.getElementById("menu4_src").src="images/nav_news.gif"
		document.getElementById("menu5_src").src="images/nav_students.gif"
		document.getElementById("menu6_src").src="images/nav_links.gif"
		setElementProperty('menu1', 'display', 'none');
		setElementProperty('menu2', 'display', 'none');
		setElementProperty('menu3', 'display', 'none');
		setElementProperty('menu4', 'display', 'none');
		setElementProperty('menu5', 'display', 'none');
		setElementProperty('menu6', 'display', 'none');
		openMenu = id;
		canMenuBeClosed = false

		var x = 0;
		var y = 0;
		
		//x = getElementLeft(objPos);
		if(id=="menu2" || id=="menu3"){
		x = getElementLeft(objPos)-3;
		}else{
		x = 0;
		}
		y = getElementBottom(objPos);
		
		/*if(!window.event){
			y-=1;
		}*/
		// position agjustment
		y = y;
		
		if(id=="menu1"){
		document.getElementById(id+"_src").src="images/nav_about_o.gif"
		}
		if(id=="menu2"){
		document.getElementById(id+"_src").src="images/nav_research_o.gif"
		}
		if(id=="menu3"){
		document.getElementById(id+"_src").src="images/nav_academic_o.gif"
		}
		if(id=="menu4"){
		document.getElementById(id+"_src").src="images/nav_news_o.gif"
		}
		if(id=="menu5"){
		document.getElementById(id+"_src").src="images/nav_students_o.gif"
		}
		if(id=="menu6"){
		document.getElementById(id+"_src").src="images/nav_links_o.gif"
		}
		
		setElementProperty(id, 'display', 'block');
		setElementProperty(id, 'left', x + "px");
		setElementProperty(id, 'top', y + "px");
	}
}

function hideMenu(id){
	setElementProperty(id, 'display', 'none');
	document.getElementById("menu1_src").src="images/nav_about.gif"
	document.getElementById("menu2_src").src="images/nav_research.gif"
	document.getElementById("menu3_src").src="images/nav_academic.gif"
	document.getElementById("menu4_src").src="images/nav_news.gif"
	document.getElementById("menu5_src").src="images/nav_students.gif"
	document.getElementById("menu6_src").src="images/nav_links.gif"
	openMenu = null;
}

function getMousePos(event){
	var x, y;
	if(window.event){
		x = window.event.clientX;
		y = window.event.clientY;
		if (document.documentElement && document.documentElement.scrollTop){
			y+=document.documentElement.scrollTop;
		} else {
			y+=document.body.scrollTop;
		}
	} else {
		x = event.pageX;
		y = event.pageY;
	}

	if(openMenu != null){
		var testInside = isInside(x, y, openMenu);
		if(!testInside && canMenuBeClosed == true){
			hideMenu(openMenu);
		}
		if(testInside){
			canMenuBeClosed = true;
			clearTimer();
		}
	}
}

function isInside(xMouse, yMouse, id){
	if( (id != null) && (xMouse >= getElementLeft(id)) && (xMouse <=getElementRight(id)) && (yMouse >= getElementTop(id)) && (yMouse <= getElementBottom(id)) ){
		return true;
	} else {
		return false;
	}
}

window.onload = function() {
	document.onmousemove = getMousePos;
}

/* 
* ITA: funzione che cambia la propriet?display di un elemento 
* ENG: This function change the property display of an element
*/

function switchDisplay(elm){
	var elm = elm.parentNode.nextSibling;
	while(elm.nodeType == 3){
		elm = elm.nextSibling;
	}
	
	var elmStyle = getElementProperty(elm, "display")

	if((elmStyle == "none") || (elmStyle == "") || (elmStyle == null)){
		setElementProperty(elm, "display", "block");
		return;
	}
	if(elmStyle == "block"){
		setElementProperty(elm, "display", "none");
		return;
	}
}