function FamiliasPreloadImages() {
  if (document.images) {

	fami = new Image();
	fami.src = "images/familias/familias.gif";

	fertilizantes = new Image();
	fertilizantes.src = "images/familias/fertilizantes.gif";
	aminoacidos = new Image();
	aminoacidos.src = "images/familias/aminoacidos.gif";

	sushumicas = new Image();
	sushumicas.src = "images/familias/sushumicas.gif";
	mejoradores = new Image();
	mejoradores.src = "images/familias/mejoradores.gif";

	quelatos = new Image();
	quelatos.src = "images/familias/quelatos.gif";
	plaguicidas = new Image();
	plaguicidas.src = "images/familias/bactericidas.gif";

	reguladores = new Image();
	reguladores.src = "images/familias/reguladores.gif";
	acondicionadores = new Image();
	acondicionadores.src = "images/familias/acond.gif";

	inductores = new Image();
	inductores.src = "images/familias/inductores.gif";
	fungicidas = new Image();
	fungicidas.src = "images/familias/fungicidas.gif";
  }
}

function MM_swapImage() { //v1.0
  var i,theObj,j=0,swapArray=new Array,oldArray=document.MM_swapImgData;
  for (i=0; i < (MM_swapImage.arguments.length-2); i+=3) {
    theObj = eval(MM_swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1])
    if (theObj != null) {
      swapArray[j++] = theObj;
      swapArray[j++] = (oldArray==null || oldArray[j-1]!=theObj)?theObj.src:oldArray[j];
      theObj.src = MM_swapImage.arguments[i+2];
  } }
  document.MM_swapImgData = swapArray; //used for restore
}

function MM_swapImgRestore() { //v1.0
  if (document.MM_swapImgData != null)
    for (var i=0; i<(document.MM_swapImgData.length-1); i+=2)
      document.MM_swapImgData[i].src = document.MM_swapImgData[i+1];
}

function MM_findObj(n, d) { //v4.0
  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 && document.getElementById) x=document.getElementById(n); return x;
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}