// ==================================================
// Declare vars
var TotalRolloverImages = 18;
var ImagesFolderAudio = "/images/";
var ImageNamePrefixAudio = "audio";
var myImageNamePrefixAudioLength = ImageNamePrefixAudio.length;
AudioRollOnImagesArray  = new Array();
AudioRollOffImagesArray = new Array();

// Preload all images for main nav
for(count = 1; count <= TotalRolloverImages; count++) {
	
	AudioRollOnImagesArray[count] = new Image();      
	AudioRollOnImagesArray[count].src = ImagesFolderAudio + ImageNamePrefixAudio + count + "_on.gif"; 
	
	AudioRollOffImagesArray[count] = new Image();      
	AudioRollOffImagesArray[count].src = ImagesFolderAudio + ImageNamePrefixAudio + count + "_off.gif"; 
	
}


// ==================================================
// Roll on
function rollonaudio(myImageName) {
	var ImageNumber = myImageName.substring(myImageNamePrefixAudioLength);
	
	if (document.images && document.images[myImageName].complete) {
		document.images[myImageName].src = AudioRollOnImagesArray[ImageNumber].src;
	}
	
}


// ==================================================
// Roll off
function rolloffaudio(myImageName) {
	var ImageNumber = myImageName.substring(myImageNamePrefixAudioLength);

	if (document.images && document.images[myImageName].complete) {
		
		document.images[myImageName].src = AudioRollOffImagesArray[ImageNumber].src;
	}
	
}