image1 = new Image(); 
image1.src= "/common/images/nav--courses-over.gif"; 
image2 = new Image(); 
image2.src= "/common/images/nav--events-over.gif"; 
image3 = new Image(); 
image3.src= "/common/images/nav--publications-over.gif"; 
image4 = new Image(); 
image4.src= "/common/images/nav--financial-over.gif"; 
image5 = new Image(); 
image5.src= "/common/images/nav--institutions-over.gif"; 
image6 = new Image(); 
image6.src= "/common/images/nav--news-over.gif"; 
image7 = new Image(); 
image7.src= "/common/images/nav--resources-over.gif"; 
image8 = new Image(); 
image8.src= "/common/images/nav--who-over.gif"; 

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

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