if(window.attachEvent) window.attachEvent('onload',chooseImage);
else if(window.addEventListener) window.addEventListener('load',chooseImage,false);


function chooseImage() {

	var ran_number=Math.round(Math.random()*(theImages.length-1));
	var chosenImage=theImages[ran_number];

	if(document.getElementById) {
		document.getElementById('header').style.backgroundImage='url(' + chosenImage + ')';
	}
	else {
		document.all['header'].style.backgroundImage='url(' + chosenImage + ')';
	}
}


function openWindow(windowSrc,windowName,windowProperties){
	var thisNewWindow = window.open(windowSrc,windowName,windowProperties);
	if(thisNewWindow && thisNewWindow.open) {
	} 
	else {
		alert("This website requires pop-up windows to be permitted by your browser.\n\nIf you are not sure how to enable pop-up windows, please check your browser\'s help files or contact us for further information.");
		return false
	}
}

function submitForm() {
	
		var theForm = document.enquiryForm
		var errorString="Inserisci tutti i campi obbligaori:\n";

		if(theForm.nome.value=="" || theForm.cognome.value=="" || theForm.email.value=="") {
			if(theForm.nome.value=="") {
				errorString+="\nNome.";
			}
			if(theForm.cognome.value=="") {
				errorString+="\nCognome.";
			}
			if(theForm.email.value=="") {
				errorString+="\nIndirizzo eMail.";
			}
			alert(errorString);
			return false
		}
		else {
			theForm.submit();
		}
		
	
	}