// Header-Slider
 
$(document).ready(function() {
 
	//Speed of the slideshow
	var speed = 5000;
 
	//You have to specify width and height in #slider CSS properties
	//After that, the following script will set the width and height accordingly
	$('#mask-gallery, #gallery li').width($('#slider').width());	
	$('#gallery').width($('#slider').width() * $('#gallery li').length);
	$('#mask-gallery, #gallery li, #mask-excerpt, #excerpt li').height($('#slider').height());
 
	//Assign a timer, so it will run periodically
	var run = setInterval('newsscoller(0)', speed);	
 
	$('#gallery li:first, #excerpt li:first').addClass('selected');
 
	//Pause the slidershow with clearInterval
	$('#btn-pause').click(function () {
		clearInterval(run);
		return false;
	});
 
	//Continue the slideshow with setInterval
	$('#btn-play').click(function () {
		run = setInterval('newsscoller(0)', speed);	
		return false;
	});
 
	//Next Slide by calling the function
	$('#btn-next').click(function () {
		newsscoller(0);	
		return false;
	});	
 
	//Previous slide by passing prev=1
	$('#btn-prev').click(function () {
		newsscoller(1);	
		return false;
	});	
 
	//Mouse over, pause it, on mouse out, resume the slider show
	$('#slider').hover(
 
		function() {
			clearInterval(run);
		}, 
		function() {
			run = setInterval('newsscoller(0)', speed);	
		}
	); 	
 
});
 
 
function newsscoller(prev) {
 
	//Get the current selected item (with selected class), if none was found, get the first item
	var current_image = $('#gallery li.selected').length ? $('#gallery li.selected') : $('#gallery li:first');
	var current_excerpt = $('#excerpt li.selected').length ? $('#excerpt li.selected') : $('#excerpt li:first');
 
	//if prev is set to 1 (previous item)
	if (prev) {
 
		//Get previous sibling
		var next_image = (current_image.prev().length) ? current_image.prev() : $('#gallery li:last');
		var next_excerpt = (current_excerpt.prev().length) ? current_excerpt.prev() : $('#excerpt li:last');
 
	//if prev is set to 0 (next item)
	} else {
 
		//Get next sibling
		var next_image = (current_image.next().length) ? current_image.next() : $('#gallery li:first');
		var next_excerpt = (current_excerpt.next().length) ? current_excerpt.next() : $('#excerpt li:first');
	}
 
	//clear the selected class
	$('#excerpt li, #gallery li').removeClass('selected');
 
	//reassign the selected class to current items
	next_image.addClass('selected');
	next_excerpt.addClass('selected');
 
			//Scroll the items
 
	$('#mask-gallery').scrollTo(next_image, 800);		
	$('#mask-excerpt').scrollTo(next_excerpt, 800);			
 
}

<div id="mask-gallery">
                            <ul id="gallery">
                                <li><img src="/misc/js/h_slider/1.png" width="960" height="425" alt="" /></li>
                                <li><img src="/misc/js/h_slider/2.png" width="960" height="425" alt="" /></li>
                                <li><img src="/misc/js/h_slider/3.png" width="960" height="425" alt="" /></li>
                            </ul>
 
                        </div>