function ivHideOverlay ( overlayClass, innerOverlayClass ) {

	if (overlayClass == undefined) {
		overlayClass = "overlay";
	}
	if (innerOverlayClass == undefined) {
		innerOverlayClass = "innerOverlay";
	}

	
	$(document).scrollTop(ivScrollTop);
	$('div.'+overlayClass).fadeOut(300);
	$('div.'+innerOverlayClass).fadeOut(300);
	if ($.browser.msie) {
		$('select').fadeIn(400);
	}
	return false;
	
}

function showExpertsForm (id, bg) {
	
	var arrOfBgPos = new Array (-1, 135, 270, 405, 540);
	
	$('#selectedTab').val(id);
	
	$('div.expertsTab div').css({ backgroundColor: '#a1a1a1' });
	$('#' + id + ' div').css({ backgroundColor: '#ec1c24' });
	
	$('div.expertsForm').hide();
	$('div.expertsForm.' + id).show();
	
	$('#experts').css({ backgroundPosition: arrOfBgPos[bg] + 'px 91px' });
	
}

function showFlyerForm (id) {
	
	$('#flyerForm').show();
	$('div.flyer').css({ backgroundColor: '#ffffff' });
	$('#' + id).css({ backgroundColor: '#f0f0f0' });
	
}

function toggleFaq (id) {
	
	$('div.' + id).toggle();
	
}

function deleteBuilding (id) {
	
	$('#layerWarningId').val(id);
	return ivShowOverlay ();
	
}

function cancelDeleteBuilding () {
	
	$('#layerWarningId').val('');
	return ivHideOverlay ();
	
}

function openBuildingDetailsMenu (id) {
	
	$('div.isSubmenu').hide();
	$('div.' + id).show();
	
}

function uploadImage (id) {
	
	$('#layerUploadId').val(id);
	return ivShowOverlay ();
	
}

function cancelUploadImage () {
	
	$('#layerWarningId').val('');
	return ivHideOverlay ();
	
}