// Header image pre-load

		about_us_off = new Image(107,31); about_us_off.src = "graphics/about_us_off.gif";
		about_us_on = new Image(107,31); about_us_on.src = "graphics/about_us_on.gif";
		what_on_off = new Image(116,31); what_on_off.src = "graphics/what_on_off.gif";
		what_on_on = new Image(116,31); what_on_on.src = "graphics/what_on_on.gif";
		vacancies_off = new Image(111,31); vacancies_off.src = "graphics/vacancies_off.gif";
		vacancies_on = new Image(111,31); vacancies_on.src = "graphics/vacancies_on.gif";
		bookings_off = new Image(108,31); bookings_off.src = "graphics/bookings_off.gif";
		bookings_on = new Image(108,31); bookings_on.src = "graphics/bookings_on.gif";
		contact_off = new Image(120,31); contact_off.src = "graphics/contact_off.gif";
		contact_on = new Image(120,31); contact_on.src = "graphics/contact_on.gif";


// Error Handler

window.onerror = handleError
function handleError() { return true; }

	
//Rollover
	
function chgImg(imgField,newImg)
{
	if (document.images) {
	document.images[imgField].src= eval(newImg + ".src")
	}

}