try { document.execCommand("BackgroundImageCache", false, true); } catch(e) {}

var headerImages = new Array(1);
var currentHeadImg = 0;
var currentHeadLayer = 2;

if (document.images) {

	home_on = new Image( ); home_on.src = "/images/home_over.jpg";
	home_off = new Image( ); home_off.src = "/images/home.jpg";

	about_us_on = new Image( ); about_us_on.src = "/images/about_us_over.jpg";
	about_us_off = new Image( ); about_us_off.src = "/images/about_us.jpg";
	
	request_quote_on = new Image( ); request_quote_on.src = "/images/request_quote_over.jpg";
	request_quote_off = new Image( ); request_quote_off.src = "/images/request_quote.jpg";
	
	report_claim_on = new Image( ); report_claim_on.src = "/images/report_claim_over.jpg";
	report_claim_off = new Image( ); report_claim_off.src = "/images/report_claim.jpg";
	
	resources_on = new Image( ); resources_on.src = "/images/resources_over.jpg";
	resources_off = new Image( ); resources_off.src = "/images/resources.jpg";
	
	forms_on = new Image( ); forms_on.src = "/images/forms_over.jpg";
	forms_off = new Image( ); forms_off.src = "/images/forms.jpg";
	
	contact_on = new Image( ); contact_on.src = "/images/contact_over.jpg";
	contact_off = new Image( ); contact_off.src = "/images/contact.jpg";
	
function imgOn(img) {
	if (document.images) {
		var imgField = $(img).getAttribute('name');
		document[imgField].src = eval(imgField + "_on.src")
	}
}

function imgOff(img) {
	if (document.images) {
		var imgField = $(img).getAttribute('name');
		document[imgField].src = eval(imgField + "_off.src")
	}
}

}



function startHeader() {
	if (headerImages.length > 1) {
		setTimeout("swapHeader();",4000);
	} //end if
}

function swapHeader() {

	if (headerImages.length > 1) {
		
		currentHeadImg = currentHeadImg + 1;
		if (currentHeadImg >= headerImages.length) { currentHeadImg = 0; }
		
		// Set layer 1
		if (currentHeadLayer == 2) {
			$('imgLayer1').style.backgroundImage = 'url(/images/' + headerImages[currentHeadImg] + ')';
			new Effect.Opacity('imgLayer2', {duration:1.0, from:1.0, to:0.0});
			currentHeadLayer = 1;
		
		// Set layer 2
		} else if (currentHeadLayer == 1) {
			$('imgLayer2').style.backgroundImage = 'url(/images/' + headerImages[currentHeadImg] + ')';
			new Effect.Opacity('imgLayer2', {duration:1.0, from:0.0, to:1.0});			
			currentHeadLayer = 2;
		} //end if


		setTimeout("swapHeader();",4000);
	} //end if

} //end function