/* -------------------------------------------------------------------------
   mgahtslide.js

	Slider "JavaScript" 	+ Initialisations 
	Requis: addEventGestionaire

	Slider "JavaScript": Version modifiée de Easy Slider - jQuery plugin
 *	written by Alen Grakalic	
 *	http://cssglobe.com/post/3783/jquery-plugin-easy-image-or-content-slider
 *
 *	Copyright (c) 2009 Alen Grakalic (http://cssglobe.com)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *
 *	Built for jQuery library
 *	http://jquery.com
 *
                                                GongaWeb  http://gongaweb.fr
   ------------------------------------------------------------------------- */

/* ----- Fonctions ----- */

(function($) {

	$.fn.easySlider = function(options){
	  
		// default configuration properties
		var defaults = {
			prevClass: 		'prevBtn',
			prevText: 		'Prev',
			nextClass: 		'nextBtn',	
			nextText: 		'Next',
			orientation:	'', //  'vertical' is optional;
			speed: 			500			
		}; 
		
		var options = $.extend(defaults, options);  
		
		return this.each(function() {  
			obj = $(this); 				
			var s = $("li", obj).length;
			var w = obj.width(); 
			var h = obj.height(); 
			var ts = s-1;
			var t = 0;
			var vertical = (options.orientation == 'vertical');
			$("ul", obj).css('width',s*w);			
 			if(!vertical) $("li", obj).css('float','left');
/*
			$(obj).after('<span id="'+ options.prevClass +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span> <span id="'+ options.nextClass +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>');
*/
			$("."+options.prevClass+" a").hide();
			$("."+options.nextClass+" a").hide();

			$("."+options.nextClass+" a").click(function(){		
				animate("next");
				if (t>=ts) $(this).fadeOut();
				$("."+options.prevClass+" a").fadeIn();
			});
			$("."+options.prevClass+" a").click(function(){		
				animate("prev");
				if (t<=0) $(this).fadeOut();
				$("."+options.nextClass+" a").fadeIn();
			});	

			function animate(dir){
				if(dir == "next"){
					t = (t>=ts) ? ts : t+1;	
				} else {
					t = (t<=0) ? 0 : t-1;
				};								
				if(!vertical) {
					p = (t*w*-1);
					$("ul",obj).animate(
						{ marginLeft: p }, 
						options.speed
					);				
				} else {
					p = (t*h*-1);
					$("ul",obj).animate(
						{ marginTop: p }, 
						options.speed
					);					
				}
			};
//			if(s>1) $("a","#"+options.nextClass).fadeIn();	
			if(s>1) $("."+options.nextClass+" a").fadeIn();	
		});
	  
	};

})(jQuery);

/* ----- OnLoad ----- */

addEventGestionaire(window, 'load', init_jsslide);

function init_jsslide() {
//	document.imajpreload=new Array();
//	preload();

//	afficherOuiById('galhautjs');
//	voirOuiById('mgslidejs');
//	afficherOuiById('mgslidejs');
//	voirNonById('mgslidecss');
//	afficherNonById('mgslidecss');

	$("#mgslidejs").easySlider({
		prevClass:'galprev',
		nextClass:'galnext'
	});
}