tm = 0;
audio = "on";

function centra(p) {
  with (document) {
    if (getElementById('schermo').clientWidth-getElementById('capo').clientWidth >= 0)
      getElementById('capo').style.left = (getElementById('schermo').clientWidth-getElementById('capo').clientWidth)/2+"px";
    else {
      getElementById('capo').style.left = "0px";
      getElementById('capo').style.borderLeft = "solid #3a1e12 5px";
      getElementById('capo').style.borderRight = "solid #3a1e12 5px";
		}
	  if (getElementById('schermo').clientHeight-getElementById('capo').clientHeight >= 0)
	    getElementById('capo').style.top = (getElementById('schermo').clientHeight-getElementById('capo').clientHeight)/2+"px";
    else {
      getElementById('capo').style.top = "0px";
      getElementById('capo').style.borderTop = "solid #3a1e12 5px";
      getElementById('capo').style.borderBottom = "solid #3a1e12 5px";
		}
		if (p != "index")
			carica(p,'up');
  }
  document.getElementById('schermo').style.visibility = "visible";
}

function roll(p,n) {
  with (document) {
		if (n == 1) {
			tm = 0;
      getElementById(''+p).style.background = "url(./img/sfondi/menu_"+p+"_on.png) 0 0 no-repeat";
		} else if (tm == 0)
      getElementById(''+p).style.background = "url(./img/sfondi/menu_"+p+"_off.png) 0 0 no-repeat";
	}
}

function carica(p,d) {
  with (document) {
			tm = 1;
      getElementById('intro').style.background = "url(./img/sfondi/menu_intro_off.png) 0 0 no-repeat";
      getElementById('project').style.background = "url(./img/sfondi/menu_project_off.png) 0 0 no-repeat";
      getElementById('vineyard').style.background = "url(./img/sfondi/menu_vineyard_off.png) 0 0 no-repeat";
      getElementById('winemaking').style.background = "url(./img/sfondi/menu_winemaking_off.png) 0 0 no-repeat";
      getElementById('bottling').style.background = "url(./img/sfondi/menu_bottling_off.png) 0 0 no-repeat";
      getElementById('wines').style.background = "url(./img/sfondi/menu_wines_off.png) 0 0 no-repeat";
      getElementById('contact').style.background = "url(./img/sfondi/menu_contact_off.png) 0 0 no-repeat";
      getElementById('filtro_up').style.display = "none";
      getElementById('filtro_dw').style.display = "none";
      getElementById('filtro_'+d).style.width = getElementById(''+p).clientWidth+"px";
      getElementById('filtro_'+d).style.height = getElementById(''+p).clientHeight+"px";
      getElementById('filtro_'+d).style.left = getElementById(''+p).offsetLeft+"px";
      getElementById('filtro_'+d).style.display = "block";
      getElementById(''+p).style.background = "url(./img/sfondi/menu_"+p+"_on.png) 0 0 no-repeat";
			frames['contenuti'].location = "./"+p+".php?check=1";
	}
}

function vai(s) {
	window.open('http://'+s);
}

function controlli_audio() {
  with (document) {
		if (audio == "on") {
      getElementById('audio').style.display = "none";
			audio = "off";
			frames['audio_file'].location = "./audio/spento.htm";
		} else {
      getElementById('audio').style.display = "block";
			audio = "on";
			frames['audio_file'].location = "./audio/acceso.htm";
		}
	}
}