//==========funzioni utilita' generale===========
//google, hai le ore contate!
function nascondimi(chi){
	getElem(chi).style.display = "none";
}


function entita(testo){
	testo = testo.replace("à","à");
	testo = testo.replace("è","è");
	testo = testo.replace("é","é");
	testo = testo.replace("ì","ì");
	testo = testo.replace("ò","ò");
	testo = testo.replace("ù","ù");
	testo = testo.replace("<","&lt;");
	testo = testo.replace(">","&gt;");
	return testo;
}
//--funzioni per fade in/out
function opacity(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function currentOpac(id, opacEnd, millisec) {
	//standard opacity is 100
	var currentOpac = 100;
	
	//if the element has an opacity set, get it
	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}

	//call for the function that changes the opacity
	opacity(id, currentOpac, opacEnd, millisec)
}

//--funzioni per il DOM

function getElem(id){
	if (document.all) {
		elem = document.all[id];
	}else {
		elem = document.getElementById(id);
	}
	return elem;
}

//--funzioni varie

function encodeURL(txt) {
	return escape(txt);
}
function decodeURL(txt) {
	return unescape(txt.replace(/\+/g,  " "));
}

//============funzioni specifiche=============

function chiosa (chi, testo, nbox){
	if(nbox==1) var bgcolore = '#F7F5BA';
	if(nbox==2) var bgcolore = '#77A7D7';
	if(nbox==1) var colore = '#000';
	if(nbox==2) var colore = '#000';
	
	chi.style.color='#999';
	getElem('boxchiosa'+nbox).innerHTML=testo;
	getElem('boxchiosa'+nbox).style.backgroundColor=bgcolore;
	getElem('boxchiosa'+nbox).style.color=colore;
	changeOpac(0,'boxchiosa'+nbox);
	shiftOpacity('boxchiosa'+nbox,300);
	
}
function schiosa (chi, nbox){
	chi.style.color='#004775';
	getElem('boxchiosa'+nbox).innerHTML='';
	getElem('boxchiosa'+nbox).style.backgroundColor='transparent';
}


var iii = 0;
var idtime = 0;
var foto=new Array();
foto[0]="images/banner/release.jpg";
foto[1]="images/banner/CRM.jpg";
var links=new Array();
links[0]="http://www.ecaconsult.it/portale.nsf";
links[1]="eventi.html";

function slideshow(){

		getElem("slidefoto").src = foto[iii];
		getElem("slidelink").href = links[iii];
		//getElem("slidetest").innerHTML = iii;
		if(iii==(foto.length-1)) iii = 0;
		else iii++;
		idtime = setTimeout("slideshow()",7000);

}