function imageSwap(daImage, daSrc){
  /*
   * imgSwap() : An image source swap function
   * Usage: imageSwap('imgName1','imgSrc1','imgName2','imgSrc2',...,'imgNameN','imgSrcN');
   *
   * Takes multiple arguments, alternate the image namd and the associated image source:
   */
  var imgObj;
  for (var j=0; j < (arguments.length/2); j++) {
    imgObj = checkImg(arguments[2*j]);
    //alert ('imgObj : ' +imgObj);
    imgObj.src = arguments[2*j + 1];
  }
}


function init() {
	DynLayerInit()
	myscroll = new MiniScroll(scrollWindow,scrollContent)
}


function MiniScroll(window,content) {
	this.window = window
	this.content = content
	this.inc = 5
	this.speed = 100
	this.contentHeight = (is.ns)? this.content.doc.height : this.content.elm.scrollHeight
	this.contentWidth = (is.ns)? this.content.doc.width : this.content.elm.scrollWidth
	this.up = MiniScrollUp
	this.down = MiniScrollDown
	this.left = MiniScrollLeft
	this.right = MiniScrollRight
	this.stop = MiniScrollStop
	this.activate = MiniScrollActivate
	this.activate(this.contentWidth,this.contentHeight)
}
function MiniScrollActivate() {
	this.offsetHeight = this.contentHeight-this.window.h
	this.offsetWidth = this.contentWidth-this.window.w
	this.enableVScroll = (this.offsetHeight>0)
	this.enableHScroll = (this.offsetWidth>0)
}
function MiniScrollUp() {
	if (this.enableVScroll) this.content.slideTo(null,0,this.inc,this.speed)
}
function MiniScrollDown() {
	if (this.enableVScroll) this.content.slideTo(null,-this.offsetHeight,this.inc,this.speed)
}
function MiniScrollLeft() {
	if (this.enableHScroll) this.content.slideTo(0,null,this.inc,this.speed)
}
function MiniScrollRight() {
	if (this.enableHScroll) this.content.slideTo(-this.offsetWidth,null,this.inc,this.speed)
}
function MiniScrollStop() {
	this.content.slideActive = false
}


function DynLayer(id,nestref,frame) {
	if (!is.ns5 && !DynLayer.set && !frame) DynLayerInit()
	this.frame = frame || self
	if (is.ns) {
		if (is.ns4) {
			if (!frame) {
				if (!nestref) var nestref = DynLayer.nestRefArray[id]
				if (!DynLayerTest(id,nestref)) return
				this.css = (nestref)? eval("document."+nestref+".document."+id) : document.layers[id]
			}
			else this.css = (nestref)? eval("frame.document."+nestref+".document."+id) : frame.document.layers[id]
			this.elm = this.event = this.css
			this.doc = this.css.document
		}
		else if (is.ns5) {
			this.elm = document.getElementById(id)
			this.css = this.elm.style
			this.doc = document
		}
		this.x = this.css.left
		this.y = this.css.top
		this.w = this.css.clip.width
		this.h = this.css.clip.height
	}
	else if (is.ie) {
		this.elm = this.event = this.frame.document.all[id]
		this.css = this.frame.document.all[id].style
		this.doc = document
		this.x = this.elm.offsetLeft
		this.y = this.elm.offsetTop
		this.w = (is.ie4)? this.css.pixelWidth : this.elm.offsetWidth
		this.h = (is.ie4)? this.css.pixelHeight : this.elm.offsetHeight
	}
	this.id = id
	this.nestref = nestref
	this.obj = id + "DynLayer"
	eval(this.obj + "=this")
}
function DynLayerMoveTo(x,y) {
	if (x!=null) {
		this.x = x
		if (is.ns) this.css.left = this.x
		else this.css.pixelLeft = this.x
	}
	if (y!=null) {
		this.y = y
		if (is.ns) this.css.top = this.y
		else this.css.pixelTop = this.y
	}
}
function DynLayerMoveBy(x,y) {
	this.moveTo(this.x+x,this.y+y)
}
function DynLayerShow() {
	this.css.visibility = (is.ns4)? "show" : "visible"
}
function DynLayerHide() {
	this.css.visibility = (is.ns4)? "hide" : "hidden"
}
DynLayer.prototype.moveTo = DynLayerMoveTo
DynLayer.prototype.moveBy = DynLayerMoveBy
DynLayer.prototype.show = DynLayerShow
DynLayer.prototype.hide = DynLayerHide
DynLayerTest = new Function('return true')

// DynLayerInit Function
function DynLayerInit(nestref) {
	if (!DynLayer.set) DynLayer.set = true
	if (is.ns) {
		if (nestref) ref = eval('document.'+nestref+'.document')
		else {nestref = ''; ref = document;}
		for (var i=0; i<ref.layers.length; i++) {
			var divname = ref.layers[i].name
			DynLayer.nestRefArray[divname] = nestref
			var index = divname.indexOf("Div")
			if (index > 0) {
				eval(divname.substr(0,index)+' = new DynLayer("'+divname+'","'+nestref+'")')
			}
			if (ref.layers[i].document.layers.length > 0) {
				DynLayer.refArray[DynLayer.refArray.length] = (nestref=='')? ref.layers[i].name : nestref+'.document.'+ref.layers[i].name
			}
		}
		if (DynLayer.refArray.i < DynLayer.refArray.length) {
			DynLayerInit(DynLayer.refArray[DynLayer.refArray.i++])
		}
	}
	else if (is.ie) {
		for (var i=0; i<document.all.tags("DIV").length; i++) {
			var divname = document.all.tags("DIV")[i].id
			var index = divname.indexOf("Div")
			if (index > 0) {
				eval(divname.substr(0,index)+' = new DynLayer("'+divname+'")')
			}
		}
	}
	return true
}
DynLayer.nestRefArray = new Array()
DynLayer.refArray = new Array()
DynLayer.refArray.i = 0
DynLayer.set = false

// Slide Methods
function DynLayerSlideTo(endx,endy,inc,speed,fn) {
	if (endx==null) endx = this.x
	if (endy==null) endy = this.y
	var distx = endx-this.x
	var disty = endy-this.y
	this.slideStart(endx,endy,distx,disty,inc,speed,fn)
}
function DynLayerSlideBy(distx,disty,inc,speed,fn) {
	var endx = this.x + distx
	var endy = this.y + disty
	this.slideStart(endx,endy,distx,disty,inc,speed,fn)
}
function DynLayerSlideStart(endx,endy,distx,disty,inc,speed,fn) {
	if (this.slideActive) return
	if (!inc) inc = 10
	if (!speed) speed = 20
	var num = Math.sqrt(Math.pow(distx,2) + Math.pow(disty,2))/inc
	if (num==0) return
	var dx = distx/num
	var dy = disty/num
	if (!fn) fn = null
	this.slideActive = true
	this.slide(dx,dy,endx,endy,num,1,speed,fn)
}
function DynLayerSlide(dx,dy,endx,endy,num,i,speed,fn) {
	if (!this.slideActive) return
	if (i++ < num) {
		this.moveBy(dx,dy)
		this.onSlide()
		if (this.slideActive) setTimeout(this.obj+".slide("+dx+","+dy+","+endx+","+endy+","+num+","+i+","+speed+",\""+fn+"\")",speed)
		else this.onSlideEnd()
		
	}

//this is where it can loop

	else {
		this.slideActive = false
		this.moveTo(endx,endy)
		this.onSlide()
		this.onSlideEnd()
		eval(fn)
		
	}
}
function DynLayerSlideInit() {}
DynLayer.prototype.slideInit = DynLayerSlideInit
DynLayer.prototype.slideTo = DynLayerSlideTo
DynLayer.prototype.slideBy = DynLayerSlideBy
DynLayer.prototype.slideStart = DynLayerSlideStart
DynLayer.prototype.slide = DynLayerSlide
DynLayer.prototype.onSlide = new Function()
DynLayer.prototype.onSlideEnd = new Function()

// Clip Methods
function DynLayerClipInit(clipTop,clipRight,clipBottom,clipLeft) {
	if (is.ie) {
		if (arguments.length==4) this.clipTo(clipTop,clipRight,clipBottom,clipLeft)
		else if (is.ie4) this.clipTo(0,this.css.pixelWidth,this.css.pixelHeight,0)
	}
}
function DynLayerClipTo(t,r,b,l) {
	if (t==null) t = this.clipValues('t')
	if (r==null) r = this.clipValues('r')
	if (b==null) b = this.clipValues('b')
	if (l==null) l = this.clipValues('l')
	if (is.ns) {
		this.css.clip.top = t
		this.css.clip.right = r
		this.css.clip.bottom = b
		this.css.clip.left = l
	}
	else if (is.ie) this.css.clip = "rect("+t+"px "+r+"px "+b+"px "+l+"px)"
}
function DynLayerClipBy(t,r,b,l) {
	this.clipTo(this.clipValues('t')+t,this.clipValues('r')+r,this.clipValues('b')+b,this.clipValues('l')+l)
}
function DynLayerClipValues(which) {
	if (is.ie) var clipv = this.css.clip.split("rect(")[1].split(")")[0].split("px")
	if (which=="t") return (is.ns)? this.css.clip.top : Number(clipv[0])
	if (which=="r") return (is.ns)? this.css.clip.right : Number(clipv[1])
	if (which=="b") return (is.ns)? this.css.clip.bottom : Number(clipv[2])
	if (which=="l") return (is.ns)? this.css.clip.left : Number(clipv[3])
}
DynLayer.prototype.clipInit = DynLayerClipInit
DynLayer.prototype.clipTo = DynLayerClipTo
DynLayer.prototype.clipBy = DynLayerClipBy
DynLayer.prototype.clipValues = DynLayerClipValues

// Write Method
function DynLayerWrite(html) {
	if (is.ns) {
		this.doc.open()
		this.doc.write(html)
		this.doc.close()
	}
	else if (is.ie) {
		this.event.innerHTML = html
	}
}
DynLayer.prototype.write = DynLayerWrite

// BrowserCheck Object
function BrowserCheck() {
	var b = navigator.appName
	if (b=="Netscape") this.b = "ns"
	else if (b=="Microsoft Internet Explorer") this.b = "ie"
	else this.b = b
	this.version = navigator.appVersion
	this.v = parseInt(this.version)
	this.ns = (this.b=="ns" && this.v>=4)
	this.ns4 = (this.b=="ns" && this.v==4)
	this.ns5 = (this.b=="ns" && this.v==5)
	this.ie = (this.b=="ie" && this.v>=4)
	this.ie4 = (this.version.indexOf('MSIE 4')>0)
	this.ie5 = (this.version.indexOf('MSIE 5')>0)
	this.min = (this.ns||this.ie)
}
is = new BrowserCheck()

// CSS Function
function css(id,left,top,width,height,color,vis,z,other) {
	if (id=="START") return '<STYLE TYPE="text/css">\n'
	else if (id=="END") return '</STYLE>'
	var str = (left!=null && top!=null)? '#'+id+' {position:absolute; left:'+left+'px; top:'+top+'px;' : '#'+id+' {position:relative;'
	if (arguments.length>=4 && width!=null) str += ' width:'+width+'px;'
	if (arguments.length>=5 && height!=null) {
		str += ' height:'+height+'px;'
		if (arguments.length<9 || other.indexOf('clip')==-1) str += ' clip:rect(0px '+width+'px '+height+'px 0px);'
	}
	if (arguments.length>=6 && color!=null) str += (is.ns)? ' layer-background-color:'+color+';' : ' background-color:'+color+';'
	if (arguments.length>=7 && vis!=null) str += ' visibility:'+vis+';'
	if (arguments.length>=8 && z!=null) str += ' z-index:'+z+';'
	if (arguments.length==9 && other!=null) str += ' '+other
	str += '}\n'
	return str
}
function writeCSS(str,showAlert) {
	str = css('START')+str+css('END')
	document.write(str)
	if (showAlert) alert(str)
}





function WM_preloadImages() {

/*
WM_preloadImages()
Loads images into the browser's cache for later use.

Source: Webmonkey Code Library
(http://www.hotwired.com/webmonkey/javascript/code_library/)

Author: Nadav Savio
Author Email: nadav@wired.com

Usage: WM_preloadImages('image 1 URL', 'image 2 URL', 'image 3 URL', ...);
*/

  // Don't bother if there's no document.images
  if (document.images) {
    if (typeof(document.WM) == 'undefined'){
      document.WM = new Object();
    }
    document.WM.loadedImages = new Array();
    // Loop through all the arguments.
    var argLength = WM_preloadImages.arguments.length;
    for(arg=0;arg<argLength;arg++) {
      // For each arg, create a new image.
      document.WM.loadedImages[arg] = new Image();
      // Then set the source of that image to the current argument.
      document.WM.loadedImages[arg].src = WM_preloadImages.arguments[arg];
    }
  }
}




today=new Date();
jran=today.getTime();
var number=18;
var random_number=0;
var image="";

function randomizeNumber()
   {
   ia=9301;
   ic=49297;
   im=233280;
   jran = (jran*ia+ic) % im;
   random_number=Math.ceil( (jran/(im*1.0)) *number);

   // Set variable image equal to appropriate image file name.
   if (random_number==1)
      image="images/welcome_01.gif";
   if (random_number==2)
      image="images/welcome_02.gif";
   if (random_number==3)
      image="images/welcome_03.gif";
   if (random_number==4)
      image="images/welcome_04.gif";
   if (random_number==5)
      image="images/welcome_05.gif";
   if (random_number==6)
      image="images/welcome_06.gif";  
   if (random_number==7)
      image="images/welcome_07.gif";
   if (random_number==8)
      image="images/welcome_08.gif"; 
   if (random_number==9)
      image="images/welcome_09.gif";
   if (random_number==10)
      image="images/welcome_10.gif";
   if (random_number==11)
      image="images/welcome_11.gif";
   if (random_number==12)
      image="images/welcome_12.gif";
   if (random_number==13)
      image="images/welcome_13.gif";
   if (random_number==14)
      image="images/welcome_14.gif";
   if (random_number==15)
      image="images/welcome_15.gif";
   if (random_number==16)
      image="images/welcome_16.gif"; 
   if (random_number==17)
      image="images/welcome_17.gif";
   if (random_number==18)
      image="images/welcome_18.gif";                
   }

// Used to reload page.

function reloadPage()
   { window.location="js-rdimg.htm"; }

function WM_imageSwap(daImage, daSrc){
  /*
   * imgSwap() : An image source swap function
   * Usage: imageSwap('imgName1','imgSrc1','imgName2','imgSrc2',...,'imgNameN','imgSrcN');
   *
   * Takes multiple arguments, alternate the image namd and the associated image source:
   */
  var imgObj;
  for (var j=0; j < (arguments.length/2); j++) {
    imgObj = checkImg(arguments[2*j]);
    //alert ('imgObj : ' +imgObj);
    imgObj.src = arguments[2*j + 1];
  }
}

function load_page(url) {
	var lyr = 'contenuto_pagina';
   if (document.all)
   {
      // IE version
      try {
      var xml = new ActiveXObject("Microsoft.XMLHTTP");
      // some versions of IE4 and some IE5.0) might be using MSXML2.XMLHTTP.4.0
      xml.Open( "GET", url, false );
      xml.Send()
      document.getElementById(lyr).innerHTML=xml.responseText;
       }
      catch (e) {
      var xml = new ActiveXObject("MSXML2.XMLHTTP.4.0");
      xml.Open( "GET", url, false );
      xml.Send()
      document.getElementById(lyr).innerHTML=xml.responseText;
      }
   }
   else
   {
      // Mozilla/Netscrap 6+ version
            var xml=new XMLHttpRequest();
            xml.open("GET",url,false);
            xml.send(null);
            document.getElementById(lyr).innerHTML=xml.responseText;
   }
}


function checkImg(img_id) {
  /*
   * checkImg()
   *
   * Takes the ID of a positioned Image element and returns the object reference.
   * It is needed to retrieve imaged nested within other layers, needed for NN 4.
  */
  var theObj,i,j,x,layerQ=new Array();
  // IE
  if (document.all) {
    // the IE document.all array will contain the Image object
    // even if it is nested within "layer" (div,span) tags.
    //var log = "";
    //for (var x=0; x<document.images.length; x++) {
    //  log += document.images[x].name + '\r';
    //}
    //alert (log);
    theObj = document.images[img_id];
  }
  else if(document.layers) {
    // Netscape: Searching in nested layers...
    // check for the images at root level first.
    if (document.images.length) {
      for (x=0; x<document.images.length; x++) {
        // if the Image object you want is in there, return the object
        if(document.images[x].name == img_id) {
          theObj = document.images[x];
          return theObj;
        }
      }
    }

    with (document) {
      // create a copy of the layers into layerQ array
      // because we will be adding additional objects (nested layers objects) to it
      for (i=0; i<layers.length; i++) {
        layerQ[i]=layers[i];
      }
      for (i=0; i<layerQ.length; i++) {
        // if the current layer contains Image objects,
        // check to see if the image you want is in there.
        if (layerQ[i].document && layerQ[i].document.images.length) {
          for (x=0; x<layerQ[i].document.images.length; x++) {
            // if the Image object you want is in there, return the object
            if(layerQ[i].document.images[x].name == img_id) {
              theObj = layerQ[i].document.images[x];
              return theObj;
            }
          }
        }
        // if the layer object contains additional layers (div & spans)
        if (layerQ[i].document && layerQ[i].document.layers.length) {
          // add the nested layers to the WM_layers array...
          // this for loop will end then ALL nested layers are added
          // to the layerQ array...
          for (j=0; j<layerQ[i].document.layers.length; j++) {
            layerQ[layerQ.length] = layerQ[i].document.layers[j];
          }
        }
      }
    }
  }
  return theObj;
}

var NN = false; Mac = false; IE = false;

if (navigator.appName == 'Microsoft Internet Explorer') IE = true;
if (navigator.appName == 'Netscape') NN = true;
if (navigator.platform == 'MacPPC') Mac = true;

function fixWindow() {
  if (Mac && NN) {
    window.self.location.reload(true);
  }
}