function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		navhome_over = newImage("images/navhome-over.gif");
		navhome_down = newImage("images/navhome-down.gif");
		navcampaign_over = newImage("images/navcampaign-over.gif");
		navcampaign_down = newImage("images/navcampaign-down.gif");
		navinvolved_over = newImage("images/navinvolved-over.gif");
		navinvolved_down = newImage("images/navinvolved-down.gif");
		navpetition_over = newImage("images/navpetition-over.gif");
		navpetition_down = newImage("images/navpetition-down.gif");
		navcontact_over = newImage("images/navcontact-over.gif");
		navcontact_down = newImage("images/navcontact-down.gif");
		preloadFlag = true;
	}
}

function ConfirmDelete(URL) {
	if (window.confirm('Are you sure you want to delete this page?\nAny sub-pages will also be removed')){
		window.location.href = URL;
	}
}

function ConfirmDeleteFile(URL) {
	if (window.confirm('Are you sure you want to delete this item?')){
		window.location.href = URL;
	}
}

// screengrabs popup opener
function PopupImage(url, width, height) {
  window.open('viewimage.php?url='+url, 'large_image', 'height='+height+',width='+width+',location=0,toolbar=0,scrollbars=0,status=0,resizable=0,menubar=0,left=0,top=0');
}