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 objDiap(img,alt,link,target){
	this.img=img;
	this.alt=alt;
	this.link=link; 
	this.target=target;
}

var arrSS=new Array()
var bolImgSS=new Array()
var arrJJ=new Array()

function SlideShow(id){
	if(arrSS[id][arrJJ[id]]){
		if(bolImgSS[id]){
			document.getElementById('divSS2_'+id).style.visibility='visible';
			opacity('slide_'+id, 100, 0, TransTime);
			opacity('slide2_'+id, 0, 100, TransTime);
			setTimeout('CambiaImmagine(\''+id+'\')',TransTime+100);
		}
		else{
			document.getElementById('divSS1_'+id).style.visibility='visible';
			opacity('slide_'+id, 0, 100, TransTime);
			opacity('slide2_'+id, 100, 0, TransTime);
			setTimeout('CambiaImmagine(\''+id+'\')',TransTime+100);
		}
	}
	else{
		arrJJ[id]=0
		SlideShow(id);
	}
}	

	function CambiaImmagine(id){
		if(bolImgSS[id]){
			document.getElementById('divSS1_'+id).style.zIndex=1; //scambio l'ordine
			document.getElementById('divSS2_'+id).style.zIndex=2; //dei due div
			str='<img alt="'+arrSS[id][arrJJ[id]].alt+'" id="slide_'+id+'" border="0" onerror="this.src=\'/img/1x1.gif\'">'; //preparo la stringa con il tag <img>		
			if(arrSS[id][arrJJ[id]].link!='')str='<a href="'+arrSS[id][arrJJ[id]].link+'" target="'+arrSS[id][arrJJ[id]].target+'">'+str+'</a>'; //se c'è il link lo aggiungo alla stringa
//alert(str);			
			document.getElementById('divSS1_'+id).innerHTML=str; //scrivo la stringa nel div
			document.getElementById('divSS1_'+id).style.visibility='hidden'; //e gli tolgo la visibilità
			changeOpac(0, 'slide_'+id);
			document.getElementById('slide_'+id).src=arrSS[id][arrJJ[id]].img; //e gli metto l'immagine
			bolImgSS[id]=false;
		}
		else{
			document.getElementById('divSS2_'+id).style.zIndex=1;
			document.getElementById('divSS1_'+id).style.zIndex=2;
			str='<img alt="'+arrSS[id][arrJJ[id]].alt+'" id="slide2_'+id+'" border="0" onerror="this.src=\'/img/1x1.gif\'">';
			if(arrSS[id][arrJJ[id]].link!='')str='<a href="'+arrSS[id][arrJJ[id]].link+'" target="'+arrSS[id][arrJJ[id]].target+'">'+str+'</a>';
//alert(str);
			document.getElementById('divSS2_'+id).innerHTML=str;
			document.getElementById('divSS2_'+id).style.visibility='hidden';
			changeOpac(0, 'slide2_'+id);
			document.getElementById('slide2_'+id).src=arrSS[id][arrJJ[id]].img;
			bolImgSS[id]=true;
		}
		arrJJ[id]=arrJJ[id]+1	
	}	
	
	function aggiungiOnLoadSS(cosa){
		var strOnload=''
		if(window.onload){
			strOnload = window.onload
			strOnload = strOnload.toString()
			strOnload = strOnload.substr(strOnload.indexOf('{')+1,strOnload.lastIndexOf('}')-strOnload.indexOf('{')-1)
		}else strOnload=''
		window.onload=new Function(strOnload+cosa)
	}
		
	function StartSlideShow(id,altezza_foto,larg_foto,tempo_trans,tempo_vis,colore_sfondo,array_foto){
	
		arrSS[id]=array_foto;			//Array con le foto
		TdHeight = altezza_foto;		 //Altezza max immagini
		TdWidth = larg_foto;		 //Altezza max immagini
		TransTime = tempo_trans;	 //Durata della transazione in ms
		ViewTime = tempo_vis;	 //Durata della visualizzazione in ms
		bgColor = colore_sfondo; //Colore di sfondo slideshow
		bolImgSS[id]=true;
		arrJJ[id]=2;
		
		document.getElementById(id).style.height = TdHeight+'px';
		document.getElementById(id).style.width = TdWidth+'px';
		document.getElementById(id).style.overflow = 'hidden';
		document.getElementById(id).style.backgroundColor = bgColor;
		
		if(arrSS[id].length==0)arrSS[id][arrSS[id].length]=new objDiap('/img/1x1.gif','','','');
		
		var str='<div id="divSS1_'+id+'" style="text-align:center;position:absolute;width:'+TdWidth+'px;height:'+TdHeight+'px;z-index:2">\n\t';
		if(arrSS[id][0].link!='')
			str+='<a href="'+arrSS[id][0].link+'" target="'+arrSS[id][0].target+'"><img id="slide_'+id+'" alt="'+arrSS[id][0].alt+'" src="'+arrSS[id][0].img+'" border="0" onerror="this.src=\'/img/1x1.gif\'"></a>';
		else
			str+='<img id="slide_'+id+'" alt="'+arrSS[id][0].alt+'" src="'+arrSS[id][0].img+'" border="0" onerror="this.src=\'/img/1x1.gif\'">';
		str+='\n</div>';
		if(arrSS[id].length>1){
			str+='\n<div id="divSS2_'+id+'" style="text-align:center;visibility:hidden;position:absolute;width:'+TdWidth+'px;height:'+TdHeight+'px;z-index:1">\n\t';
			if(arrSS[id][1].link!='')
				str+='<a href="'+arrSS[id][1].link+'" target="'+arrSS[id][1].target+'"><img id="slide2_'+id+'" alt="'+arrSS[id][1].alt+'" src="'+arrSS[id][1].img+'" border="0" onerror="this.src=\'/img/1x1.gif\'"></a>';
			else
				str+='<img id="slide2_'+id+'" alt="'+arrSS[id][1].alt+'" src="'+arrSS[id][1].img+'" border="0" onerror="this.src=\'/img/1x1.gif\'">';
			str+='\n</div>';
		}
//alert(str)
		document.getElementById(id).innerHTML=str;
		if(arrSS[id].length>1){
			aggiungiOnLoadSS('varSlideShow'+id+'=setInterval("SlideShow(\''+id+'\');",ViewTime);');
		}
	}