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) {
	//top nav preloaded images
		g_community_over = newImage("images/global_community_on.gif");
		g_profile_over = newImage("images/global_profile_on.gif");
		g_solutions_over = newImage("images/global_solutions_on.gif");
		g_henry_over = newImage("images/global_henry_on.gif");
		g_contact_over = newImage("images/global_contact_on.jpg");
		
	//home main nav preloaded images
		community_over = newImage("images/community_on.gif");
		solutions_over = newImage("images/solutions_on.gif");
		henry_over = newImage("images/henry_on.gif");

		preloadFlag = true;
	}
}