function NumberButton(buttonOnImageSrc, buttonOffImageSrc) {
		this.buttonOnImage = new Image();
		this.buttonOnImage.src = buttonOnImageSrc;
		this.buttonOffImage = new Image();
		this.buttonOffImage.src = buttonOffImageSrc;
	}
	function PopupSlider(id, interval, autoStart, numberButtons) {
		this.id = id;
		this.interval = interval==null?5000:interval;
		this.autoStart = autoStart==null?false:autoStart;
		this.numberButtons = numberButtons;
		
		this.startSlideNumber = 0;
		this.playSlideNumber = 0;
		this.endSlideNumber = 0;
		this.slidePlaying = false;
		
		this.timer = null;
	}
	PopupSlider.prototype.initNumberButtons = function() {
		if(this.numberButtons != null) return;
		this.numberButtons = new Array();
		for(var i = 1 ; i <= 6 ; i++) {
			this.numberButtons[this.numberButtons.length] = new NumberButton("/images/main/tab_notice_0" + i + "1.gif","/images/main/tab_notice_0" + i + "2.gif");
		}
	}
	PopupSlider.prototype.initSlider = function() {
		this.initNumberButtons();
		
		var slidePanel = $(this.id);
		if(!slidePanel) return;
		var slides = slidePanel.getElementsByTagName("dl");
		this.endSlideNumber = slides.length-1;
		for(i = 0 ; i < slides.length ; i++ ){
			var imgs = slides[i].getElementsByTagName("img");
			if(imgs && imgs.length > 1) {
				imgs[0].id = this.id + "-number" + (i + 1);
				imgs[0].onclick = this.numberClick(this, i);
				imgs[1].id = this.id + "-slideImage" + (i + 1);
			}
			var dds = slides[i].getElementsByTagName("dd");
			if(dds && dds.length > 0) {
				dds[0].id = this.id + "-slide" + (i + 1);
			}
		}
	
		if(this.autoStart) {
			this.startSlider();
		}
	}
	PopupSlider.prototype.numberClick = function(slider, num) {
		return ( 
			function() {
				if(slider.playSlideNumber == num) return false;
				if(slider.slidePlaying) return false;
				slider.slidePlaying = true;
				if(slider.timer) clearTimeout(slider.timer);
				var fromSlideNumber = slider.playSlideNumber;
				slider.playSlideNumber = num;
				slider.transition(slider, fromSlideNumber, num);
			}
		);
	}
	PopupSlider.prototype.startSlider = function() {
		this.timer = setTimeout(this.fadeInOut(this), this.interval);
	}
	PopupSlider.prototype.fadeInOut = function (slider) {
		return (function() {
			if(slider.slidePlaying) return;
			slider.slidePlaying = true;
			var fromSlideNumber = slider.playSlideNumber;
			if(fromSlideNumber == slider.endSlideNumber) {
				slider.playSlideNumber = slider.startSlideNumber;
			} else {
				slider.playSlideNumber++;
			}
			toSlideNumber = slider.playSlideNumber;
			
			slider.transition(slider, fromSlideNumber, toSlideNumber);
			if(slider.timer) clearTimeout(slider.timer);
			slider.timer = setTimeout(slider.fadeInOut(slider), slider.interval + 850);
		});
	}
	PopupSlider.prototype.transition = function(slider, fromSlideNumber, toSlideNumber) {
		new Effect.Parallel(	[ 
						Effect.Fade( slider.id + "-slide" + (fromSlideNumber + 1), 0.5 ) , 
						Effect.Appear( slider.id + "-slide" + (toSlideNumber + 1), 0.5 ) 
					]
			     		,
					{	
						beforeStart:function(){
							$( slider.id + "-number" + (fromSlideNumber + 1) ).src = slider.numberButtons[fromSlideNumber].buttonOffImage.src;
							$( slider.id + "-number" + (toSlideNumber + 1) ).src = slider.numberButtons[toSlideNumber].buttonOnImage.src;
						},
						afterFinish:function(){
							slider.slidePlaying = false;
						}						
					});
		
	}