// change to a new slide
	function showSlide( slideshowOption ) {  
		// don't do it again
		if ( slideshowOption == lastSlideshowOption ) return true;
		
		// change to the new slide
		var slide = document.getElementById("slideshowSlide-"+slideshowOption);
		if ( !slide || slideshowOption == "" ) return false;
		slide.style.display = "";  // maybe do a quick transition here?
		document.getElementById("slideshowSlide-"+lastSlideshowOption).style.display = "none";
								
		// clear the last selected option and set the new one
		if ( lastSlideshowOption != "" ) document.getElementById("slideshowOption-"+lastSlideshowOption).className = "";
		var option = document.getElementById("slideshowOption-"+slideshowOption);
		if ( !option ) return false;
		option.className = "selected";
		lastSlideshowOption = slideshowOption;
		
		// send a GA event for the slide
		//pageTracker._trackEvent('Home Page','Slideshow',slideshowOption);
		return true;
	}
	// keep track of the last selected slideshow option
	var lastSlideshowOption = "debt";