function 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 Cambia_colore_tabella( t,ina ){
t.bgColor='#000000';

}

function col_back( t ){
t.bgColor='#202020';
}

function cambia(url)
   {   
   document.getElementById('centro').src=url;
   }
  
//function cambia1(url)
   //{
	//url = 'http://www.parks.it/parco.etna/prodotti.php'   
  // document.getElementById('centro').src=url;
  // }    
  
  function TargetBlank() {
if(document.getElementsByTagName){
var msg = " (collegamento in nuova finestra)";
var links = document.getElementsByTagName("a");
for (i = 0; i < links.length; i++) {
var link = links[i];
if (link.className.indexOf("targetblank") != -1)
{
link.title += msg;
var fn = function () {
window.open(this.href); return false; }
link.onclick = link.onkeypress = fn;
}
}
}
}