function initMarkSlideshow() {
	var total_slides     = 5;    // total slides in array
	var slide_width      = 1020; // (px) width of each slide
	var preview_width	 = 204;  // (px) width of preview hovering border
	var preview_offsetY  = 309;  // (px) offset (top) of preview hovering border
	var transition_speed = 0.9;  // (seconds) Transistion speed of slides
	var slide_delay      = 7000; // (ms) pause between slides
	var current_slide    = 1;
	var slide_position   = 0;
	var run_slider		 = true;
	var slideTimer = function(){
	  if (run_slider) {
		  current_slide++;
		  if (current_slide > total_slides) {
		    current_slide = 1;
		  }
		  moveSlide();
	  }
	  setTimeout(slideTimer,slide_delay);
	}
	var moveSlide = function(){
	  var newPosX = (0 - ((current_slide - 1) * slide_width));
	  new Effect.Move('slides', { x: newPosX, y: 0, mode: 'absolute', duration: transition_speed });
	  var newPosX = ((current_slide - 1) * preview_width);
	  new Effect.Move('previewCap', { x: newPosX, y: preview_offsetY, mode: 'absolute', duration: transition_speed });	  	
	}
	$$("#previews li").each(function(item){
	  Event.observe(item,'click',function(){
	    current_slide = parseInt(this.id.replace("s",""));
	    moveSlide();
	  });
	});
	Event.observe($('slideshow'),'mouseover',function(){
		run_slider = false;
	});
	Event.observe($('slideshow'),'mouseout',function(){
		run_slider = true;
	});
	slideTimer.delay((slide_delay / 1000));
}