thisAd = 0;
//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 blendimage(divid, imageid, imagefile , millisec) { 

    var speed = Math.round(millisec / 10); 
    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 
imagefile = new Array("/immagini/acqua1Cortese.JPG","/immagini/acqua2Cortese.JPG",
"/immagini/acqua3Cortese.JPG","/immagini/acqua1Cortese.JPG");



	if ( ++thisAd == imagefile.length){
	thisAd  = 1;}
 	document.getElementById(imageid).src = imagefile[thisAd]; 

setTimeout(" blendimage('blenddiv','blendimage','+ imagefile+' , 200)", 4000);
	    //fade in image 
    for(i = 0; i <= 100; i++) {
        setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed)); 
        timer++; 
    }  
}