var currentpic = 0;

function setLightboxURL(theURL){
	var mainpiclink = document.getElementById('main_img_link');
	if(theURL == "")
	{
		mainpiclink.href = "#";
		mainpiclink.onclick = function () {return false;}	
	}
	else
	{
		mainpiclink = document.getElementById('main_img_link');
		mainpiclink.href = theURL;
		mainpiclink.onclick = function () {showLightbox(this); return false;}	
	}
}


function APHpopup(veh_id)
{
	var gotoURL = "/popup.php?veh_id=" + veh_id;
	popWin=window.open(gotoURL,"", "left=200,top=200,width=10,height=10,resizable=yes,scrollbars=no");
	popWin.focus();
}
function APHfincalc(price)
{
	var gotoURL = "/fincalc.php?price=" + price;
	popWin=window.open(gotoURL,"", "left=200,top=200,width=10,height=10,resizable=no,scrollbars=no");
	popWin.focus();
}

function preloadImages()
{
	var numpics = arguments.length;
	document.arrayImages = new Array(numpics) 
	for (var i=0; i < numpics; i++)
	{
    	var preload = new Image();
		document.arrayImages[i] = arguments[i];
    	preload.src = document.arrayImages[i];
	}
}

function swap(imgIndex) {
    document.main_img.src = document.arrayImages[imgIndex];
    currentpic = imgIndex;
}

function checkphone(input){
	var teststring = ("1234567890 ");
	var pass = true;
	for (var i = 0; i < input.length; i++)	{
		var found = false;
		for (var j = 0; j < teststring.length; j++)		{
			if (input.charAt(i) == teststring.charAt(j)) found = true;	}
			if (!found) pass = false;	}
   return (pass);
 }
function checkenquiry(myForm) 
{
	var myalertstring = "";
	if (myForm.firstname.value=="")
	{myalertstring = myalertstring + "Please enter your first name or an initial\n" ;}
	if (myForm.lastname.value=="")
	{myalertstring = myalertstring +  "Please enter your last name\n" ;	}
/*	if (myForm.address1.value=="")
	{myalertstring = myalertstring +  "Please enter the first line of your address\n" ;}
	if (myForm.city.value=="")
	{myalertstring = myalertstring +  "Please your city\n" ;}
	if (myForm.postcode.value=="")
	{myalertstring = myalertstring +  "Please enter your postcode\n" ;}
*/
	if (!(checkphone(myForm.tel_day.value)))
	{myalertstring = myalertstring +  "Daytime telephone number must contain only digits 0-9 or spaces\n" ;}
	if (!(checkphone(myForm.tel_eve.value)))
	{myalertstring = myalertstring +  "Evening telephone number must contain only digits 0-9 or spaces\n" ;}
	if (myalertstring != "")
		{
		alert(myalertstring + "Please correct your entries and try again.");
		return (false);
		}
	return (true);
}