var BANNER = function(arr) {
	this.interval = setInterval('banner.next()',5000);
	this.src = arr;
	this.img = 0;
	this.getNext = function() { if(this.img==this.src.length-1) return 0; else return this.img+1; }
	this.getPrev = function() { if(this.img==0) return this.src.length-1; else return this.img-1; }
	this.curr = 1;
	this.next = function(next,exact) {
		if(exact) { 
			$('.SliderNavigation a:nth-child('+(this.img+1)+')').css('background-image','url(img/slider_navigation.png)');
			this.img = exact-1; 
			clearInterval(this.interval); 
			this.interval = setInterval('banner.next()',5000); 
			$('.SliderNavigation a:nth-child('+exact+')').css('background-image','url(img/slider_navigation_hover.png)');
		}
		else {
			$('.SliderNavigation a:nth-child('+(this.img+1)+')').css('background-image','url(img/slider_navigation.png)');
			this.img = next?this.getPrev():this.getNext();
			$('.SliderNavigation a:nth-child('+(this.img+1)+')').css('background-image','url(img/slider_navigation_hover.png)');
		}
		_old = this.curr;
		if(this.curr==1) this.curr=2; else this.curr=1;
		$('#banner'+this.curr).attr('src',this.src[this.img]);
		$('#banner'+this.curr).hide();
		$('#banner'+this.curr).fadeIn(1000);
		$('#banner'+_old).fadeOut(1000);
		$('#banner'+this.curr).css('z-index',3);
		$('#banner'+_old).css('z-index',2);
	}
}