/**
 *  Rollover Control
 *  
 */
 
 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_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_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 Banner(codCntr,numDiv){
	var data = new Date();
	//var numDiv = 4;//document.getElementsByName("divContenitore").length;--> non lo posso gestire così perchè div non ammette name!!
	
	
	if(numDiv!=0){
		var posizione = (data.getHours()%numDiv)+1;
		for (i=1;i<numDiv+1;i++){
		  
		  if(i==posizione){
		  	document.getElementById("divCont_"+codCntr+"_"+i).style.display = "block";	
		  }
		  else{  
		  	document.getElementById("divCont_"+codCntr+"_"+i).style.display = "none";	
		  }
		}
	}
	
	
	timer=setTimeout('Banner()',300000)
}