<!--

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];}}

}


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_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 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 UB_changeClass() { //v1.0

	var i,myObj,myClass,args=UB_changeClass.arguments;

	for (i=0; i<(args.length-1); i+=2) {

		myObj=MM_findObj(args[i]);

		myObj.className=args[i+1];

	}

}

function randomBkg() {

	var ranNum= Math.floor(1+Math.random()*4);

	UB_changeClass('content','content'+ranNum)

}

function fullRandomBgk() {

	var ranNum= Math.floor(1+Math.random()*4);

	UB_changeClass('content','content'+ranNum)

	setTimeout(fullRandomBgk, ((5+Math.random()*5)*1000))

}

function F_getId(id) {
	var elemento;
 	if(document.getElementById) elemento = document.getElementById(id); // se esiste il metodo getElementById		
	else elemento = document.all[id]; // altrimenti è necessario usare un vecchio sistema		
	return elemento;
}

function changeImgSource(id,source) {
	elemento=F_getId(id);
	elemento.src=source;
	return false;
}

//-->