// JavaScript Document

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) {
		
		// Navigation
		navWhatIsAF_over = newImage("images/navWhatIsAF-over.gif");
		navSymptomsDiagnosis_over = newImage("images/navSymptomsDiagnosis-over.gif");
		navCausesPrevention_over = newImage("images/navCausesPrevention-over.gif");
		navTreatment_over = newImage("images/navTreatment-over.gif");
		navArticles_over = newImage("images/navArticles-over.gif");
		navPatientStories_over = newImage("images/navPatientStories-over.gif");
		navLinks_over = newImage("images/navLinks-over.gif");
		
		// Font chooser
		fontSzSmall_over = newImage("images/fontSzSmall-over.gif");
		fontSzMed_over = newImage("images/fontSzMed-over.gif");
		fontSzLarge_over = newImage("images/fontSzLarge-over.gif");
		
		preloadFlag = true;
	}
}