//////////////////////////////////////
//
// rollover.js
//
//////////////////////////////////////
// Copyright 2005 Christopher Gronbeck
// christopher@susdesign.com
//////////////////////////////////////


var currentThumbImageNum;
var currentThumbImagePrefix;


function changeImages() {


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

function MouseOverThumb (imageNum, imagePrefix) {

	// swap images if the thumb isn't the currently active one
	
	if (imageNum != currentThumbImageNum) {
	
		// set the new main image
		
		changeImages ('main', imagePrefix + '-main.jpg');		

		// hilite the current thumb
		
		changeImages (imageNum, imagePrefix + '-thumb.jpg');		

		// dim the previous thumb

		changeImages (currentThumbImageNum, currentThumbImagePrefix + '-thumb-dim.jpg');		

		// set the global variables indicating the currently active thumb

		currentThumbImageNum    = imageNum;
		
		currentThumbImagePrefix = imagePrefix;
	}
}

function newImage(arg) {

	if (document.images) {

		var rslt = new Image();

		rslt.src = arg;
		
		return rslt;

	}

	else {
	
		return (0);
	}
}