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

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

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function toggleImages() {
	for (var i=0; i<toggleImages.arguments.length; i+=2) {
		if (selectedQuestion == toggleImages.arguments[i])      changeImagesArray(toggleImages.arguments[i+1]);
	}
}

var selectedQuestion = '';
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		da_over = newImage("../images/community/foodbanks-da-over.gif");
		bh_over = newImage("../images/community/foodbanks-bh-over.gif");
		nb_over = newImage("../images/community/foodbanks-nb-over.gif");
		ph_over = newImage("../images/community/foodbanks-ph-over.gif");
		pa_over = newImage("../images/community/foodbanks-pa-over.gif");
		
		

		preloadFlag = true;
	}
}