function load_shot(numero) {
//document.getElementById('currimage').value = address;


/*tutte le if annidate sono inutili.... in firefox si vede lo stesso il refresh*/
        if (document.layers)
           document.layers["matrice"].display='none';
        else
           document.all["matrice"].style.display='none';

      if (document.layers)
	{
        /*document.layers["galleria"].visibility='hide';*/
	if (document.layers["galleria"].display!='block')
	     document.layers["galleria"].display='block';
        /*document.layers["galleria"].visibility='show';*/
	}
       else
	{
        /*document.layers["galleria"].visibility='hidden';*/
	if (document.all["galleria"].style.display!='block')
	    document.all["galleria"].style.display='block';
	/*document.all["galleria"].style.visibility='visible';*/
	}

      if (document.layers)
	{
	/*document.layers["shot"].visibility='hide';*/
	if (document.layers["shot"].display!='block')
	    document.layers["shot"].display='block';
	/*document.layers["shot"].visibility='show';*/
	}
       else
	{
	/*document.all["galleria"].style.visibility='hidden';*/
	if (document.all["shot"].style.display!='block')
	    document.all["shot"].style.display='block';
	/*document.all["galleria"].style.visibility='visible';*/
	}






/*document.layers["matrice"].display='none';
document.layers["shot"].display='block';
document.layers["galleria"].display='block';*/


    document.getElementById('shotto').src = "galleria/gal000.jpg";
    document.getElementById('shotto').src = foto[numero];
    currimage=numero
    testo.innerHTML = "<font size=4 color=blue><b>" + descrizione[numero] + "</font></b><br><font size=1 color=red><b>foto "+numero+"/"+(foto.length-1)+"</font></b>";
}

function togli() {

        if (document.layers)
           document.layers["matrice"].display='block';
        else
           document.all["matrice"].style.display='block';

       if (document.layers)
          document.layers["shot"].display='none';
       else
          document.all["shot"].style.display='none';

       if (document.layers)
          document.layers["galleria"].display='none';
       else
          document.all["galleria"].style.display='none';


/*document.layers["matrice"].display='block';
document.layers["shot"].display='none';
document.layers["galleria"].display='none';*/

}

/* invece di cambiare tutto il foglio di stile basta fare modifiche locali
function showOrHide(value) {
    if (value==0) {
        if (document.layers)
           document.layers["layer1"].display='hide';
        else
           document.all["layer1"].style.display='hidden';
   }
   else if (value==1) {
       if (document.layers)
          document.layers["layer1"].display='show';
       else
          document.all["layer1"].style.display='visible';
   }
}*/



function successivo() {
currimage=currimage+1;
if (currimage>foto.length-1) currimage=1;
load_shot(currimage);
}

function precedente() {
currimage=currimage-1
if (currimage<1) currimage=foto.length-1; //per comodità array[0]=""
load_shot(currimage);

}