$(document).ready(function() {
	
	/* advanced search form */
	$('#advanced-search').hide();
	$('#more-options').click(function(){
	 $('#search').fadeOut('fast');
	 $('#advanced-search').slideDown();
	 return false;
	})
	$('#less-options').click(function(){
	 $('#advanced-search').slideUp('fast');
	 $('#search').fadeIn();
	 return false;
	})
	
	/* tabbed interface for intros */
    $("#nav_intros a").click(function(){
        $("#nav_intros a[href='"+this.hash+"']").addClass("actif");
        $("#infobox div.tab").hide();
        $(this.hash).fadeIn('slow');
        return false;
    });
    $("#nav_intros a.default").click();
	
	/* menu rollover */	
	$('#header .nav a').hover(function() {
	   var target = $(this).attr('rel');
	   $('#infobox .intros').css('background-image', 'url(/images/info_'+target+'.png)');
	 }, function() {
	   $('#infobox .intros').css('background-image', 'url(/images/info_logo.png)');
	 } );
	
	
	/* diapo fader */
	$("#diapo").easyFader({
		auto: true, 
		continuous: true,
		pause: 3500,
		numeric: true
	});
	
});


(function($) {

	$.fn.easyFader = function(options){
	  
		// default configuration properties
		var defaults = {			
			speed: 			800,
			auto:			false,
			pause:			2000,
			continuous:		false, 
			numeric: 		false,
			numericId: 		'controls'
		}; 
		
		var options = $.extend(defaults, options);  
				
		this.each(function() {  
			var obj = $(this);
			var s = $("li", obj).length;
			var ts = s-1;
			var t = 0;	
			var clickable = true;
			
			html = '<ol id="'+ options.numericId +'"></ol>';
			$(obj).after(html);
			
			if(options.numeric){									
				for(var i=0;i<s;i++){						
					$(document.createElement("li"))
						.attr('id',options.numericId + (i+1))
						.html('<a rel='+ i +' href=\"javascript:void(0);\">'+ (i+1) +'</a>')
						.appendTo($("#"+ options.numericId))
						.click(function(){							
							animate($("a",$(this)).attr('rel'),true);
						}); 												
				};							
			};
			
			function setCurrent(i){
				i = parseInt(i)+1;
				$("li", "#" + options.numericId).removeClass("current");
				$("li#" + options.numericId + i).addClass("current");
			};
			
			function adjust(){	
				clickable = true;
				if(options.numeric) setCurrent(t);
			};
			
			function animate(dir,clicked){
				if (clickable){
					clickable = false;
					var ot = t;				
					switch(dir){
						case "next":
							t = (t>=ts) ? (options.continuous ? 0 : ts) : t+1;						
							break; 
						case "prev":
							t = (t<=0) ? (options.continuous ? ts : 0) : t-1;
							break; 
						case "first":
							t = 0;
							break; 
						case "last":
							t = ts;
							break; 
						default:
							t = dir;
							break; 
					};	
					
					$("li:eq("+ot+")", obj).fadeOut('fast', adjust);
					$("li:eq("+t+")", obj).fadeIn(options.speed);
					
					if(clicked) clearTimeout(timeout);
					if(options.auto && dir=="next" && !clicked){;
						timeout = setTimeout(function(){
							animate("next",false);
						},options.speed+options.pause);
					};
			
				};
				
			};
			// init
			var timeout;
			if(options.auto){;
				timeout = setTimeout(function(){
					animate("next",false);
				},options.pause);
			};		

			$("li:not(:eq(0))", obj).hide();
			if(options.numeric) setCurrent(0);
			
		});
	  
	};

})(jQuery);