// Neil P. Arnold - 7/21/2004
// begin rollover script
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function preloadImages() {
	if (document.images) {
		rivers_awareness_over = newImage("/rivers/images/nav/rivers_awareness_over.gif");
		rivers_awareness_off = newImage("/rivers/images/nav/rivers_awareness.gif");
		
		RiverNetwork_over = newImage("/rivers/images/nav/RiverNetwork_over.gif");
		RiverNetwork_off = newImage("/rivers/images/nav/RiverNetwork.gif");
		
		AmericanRivers_over = newImage("/rivers/images/nav/AmericanRivers_over.gif");
		AmericanRivers_off = newImage("/rivers/images/nav/AmericanRivers.gif");
		
		about_partners_over = newImage("/rivers/images/nav/about_partners_over.gif");
		about_partners_off = newImage("/rivers/images/nav/about_partners.gif");
		
		vol_stories_over = newImage("/rivers/images/nav/vol_stories_over.gif");
		vol_stories_off = newImage("/rivers/images/nav/vol_stories.gif");
		
		river_photos_over = newImage("/rivers/images/nav/river_photos_over.gif");
		river_photos_off = newImage("/rivers/images/nav/river_photos.gif");
		
		RiverStories_over = newImage("/rivers/images/nav/RiverStories_over.gif");
		RiverStories_off = newImage("/rivers/images/nav/RiverStories.gif");

		home_over = newImage("/rivers/images/nav/home_over.gif");
		home_off = newImage("/rivers/images/nav/home.gif");

		preloadFlag = true;
	}
}


function Off(target) {
	if (document.images && preloadFlag){
		document[target].src = eval(target + "_off.src");
	}
}

function Over(target) {
	if (document.images && preloadFlag){
		document[target].src = eval(target + "_over.src");
	}
}

//end rollover script

var preloadFlag = false;
preloadImages();