$(document).ready(function(){

	if(!$("#selection_container")) return;
	$("#selection_container").height($("#selection_page_0").height() + 5);
	var box_position = 0;
	var nb_pages = $(".selection_page").length;
	var max_position = nb_pages - 1;
	$("#sliding_content").width(nb_pages * 700);
	
	$("#nav_next").click(function(event){
		if(box_position < max_position)
		{
			box_position++;
			var h = $("#selection_page_"+box_position).height() + 5;
	  	$("#sliding_content").animate( { left: "-=688" }, 400, 'linear', function(){
	  		$("#selection_container").animate( { height: h }, 400 );
	  	});
	  	if(box_position == max_position) $("#content_next").addClass('disabled');
			if(box_position == 1) $("#content_prev").removeClass('disabled');
		}
		event.preventDefault();
	});
	
	$("#nav_prev").click(function(event){
		if(box_position > 0)
		{
			box_position--;
			if(box_position == 0) $("#content_prev").addClass('disabled');
			if(box_position == max_position-1) $("#content_next").removeClass('disabled');			
			var h = $("#selection_page_"+box_position).height() + 5;
	  	$("#sliding_content").animate( { left: "+=688" }, 400, 'linear', function(){
	  		$("#selection_container").animate( { height: h }, 400 );
	  	});
		}
		event.preventDefault();
	});	
	
});