function openPren() {
	
	winWidth = 800;
	winHeight = 600;
	winOffX = (screen.width - winWidth - 22)/2;
	winOffY = (screen.height - winHeight)/2 - 30;
	winSpecs = "width="+winWidth+",height="+winHeight+",toolbar=0,menubar=0,scrollbars=1,resizable=1,location=0,directories=0,status=0,left=" + winOffX + ",top=" + winOffY;
	// CONTROLLO COMPATIBILITA' PARAMETRI VECCHIO BROWSER
	if (document.all) 
	{
		if (document.all.HOTEL.value=='All')
		{
			href = "https://www.hoteleasyreservations.com/her/her/multispecoffer.aspx?HOTEL=73&HLANG="+document.all.HLANG.value+"&DTFROM="+document.all.DTFROM.value+"&NUMNOTTI="+document.all.NUMNOTTI.value+"&LISTINO=DEFAULT&FASTRES=Y&RSTSS=Y";	
		}
		else
		{
			href = "https://www.hoteleasyreservations.com/her/her/pren.aspx?HOTEL="+document.all.HOTEL.value+"&HLANG="+document.all.HLANG.value+"&DTFROM="+document.all.DTFROM.value+"&NUMNOTTI="+document.all.NUMNOTTI.value+"&FASTRES=Y&RSTSS=Y";	
		}
	} 
	// CONTROLLO COMPATIBILITA' PARAMETRI NUOVI BROWSER CHE UTILIZZANO IL getElementById
	else if (document.getElementById) 
	{
					if (document.getElementById("HOTEL").value =='All')
					{
					href = "https://www.hoteleasyreservations.com/her/her/multispecoffer.aspx?HOTEL=73&HLANG="+document.getElementById("HLANG").value+"&DTFROM="+document.getElementById("DTFROM").value+"&NUMNOTTI="+document.getElementById("NUMNOTTI").value+"&LISTINO=DEFAULT&FASTRES=Y&RSTSS=Y";	
				   	}
				   	else
				   	{
				   	href = "https://www.hoteleasyreservations.com/her/her/pren.aspx?HOTEL="+document.getElementById("HOTEL").value +"&HLANG="+document.getElementById("HLANG").value+"&DTFROM="+document.getElementById("DTFROM").value+"&NUMNOTTI="+document.getElementById("NUMNOTTI").value+"&FASTRES=Y&RSTSS=Y";	
				   	}
   	}
	window.open(_sslinkd(href,true),'_parent');
	//window.open(href,"prenotazioni",winSpecs);

	
}