/** british museum */
// funzioni per il sito

function MM_findObj(n, d) { //v3.0
  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); 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 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];}}
}

	
	var myTimer;
	var increment = 10;
	
	function startFadeIn(myId) {
		clearInterval(myTimer);
		var element = document.getElementById(myId);
		element.filters.alpha.opacity = 0;
		myTimer=setInterval("fadeIn('" + myId + "')", 100);
	}

	function fadeIn(myId){
		var element = document.getElementById(myId);

		if(element.filters.alpha.opacity<100) {
			element.filters.alpha.opacity += increment;
		} else {
			clearInterval(myTimer);
		}
	}
	
function showHide(idRow) {
	
	var counter = 0;
	while(true) {
		var myChild = document.getElementById("progetto" + counter);
		if(!myChild) break;
		if(idRow != "menu" + counter) myChild.className = "hide";
		counter++;
	}
		
	var currentChild = document.getElementById(idRow);
	if(currentChild.className == "hide") currentChild.className = "showItem";
	else currentChild.className = "showItem";
	
	startFadeIn(idRow);
}
function hide() {
	var newClass = "";
	var rowDiv = document.getElementById('boxmessage');
	rowDiv.className = "hide";
	
}
function showDiv(idRow) {
	
	var counter = 0;
	while(true) {
		var myChild = document.getElementById("divMap" + counter);
		if(!myChild) break;
		if(idRow != "menu" + counter) myChild.className = "hide";
		counter++;
	}
		
	var currentChild = document.getElementById(idRow);
	if(currentChild.className == "hide") currentChild.className = "showItem";
	else currentChild.className = "showItem";
	startFadeIn(idRow);
}

function hideDiv(idRow,idRow1) {
	var rowDiv = document.getElementById(idRow);
	rowDiv.className = "hide";
	var rowDiv = document.getElementById(idRow1);
	rowDiv.className = "showItem";
	
}

function show(message, event) {
		// Determino le dimensioni della window 
	  var winW = 0;  
	  var winH = 0;  
		if (navigator.appName=="Netscape") {    
			winW = window.innerWidth;   
		  winH = window.innerHeight;  
		}    
		if (navigator.appName.indexOf("Microsoft")!=-1) { 
		  winW = document.body.offsetWidth;
		  winH = document.body.offsetHeight;    
		}    

		var newClass = "";  
		var menuPopup = document.getElementById('boxmessage');    
		var errorCell = document.getElementById('message_text');		
	   errorCell.innerHTML = message;
		menuPopup.className = "showContent";
	
		menuPopup.position = "absolute"; 
		menuPopup.style.left = event.clientX; 
		menuPopup.style.top = event.clientY + document.body.scrollTop;  
		
		// Determino la posizione dell'angolo inferiore dx in base alla dimensione della window   
		var scrollDimension = 21;
		var bottomedge = menuPopup.offsetHeight + event.clientY;  
		if (bottomedge > winH) menuPopup.style.top = (event.clientY+winH)-bottomedge-scrollDimension + document.body.scrollTop;
		var rightedge = document.body.clientWidth-event.clientX;
		if (rightedge < menuPopup.offsetWidth) menuPopup.style.left = document.body.scrollLeft + event.clientX - menuPopup.offsetWidth;
		else menuPopup.style.left = document.body.scrollLeft + event.clientX;	
}