Billboard = {
	pause: false,
	active: 1,
	SlideName: '',
	LinkName: '',
	UpdateTime: 3000,
	clsOn: 'adOn',
	clsOff: 'adOff',
	clsHide: 'hideObj',
	clsShow: 'showObj',
	clsSlide: 'BillboardSlide',
	clsLink: 'NavLink',
	gamecount: 5,
	
	Initialize:function( Slide, Link) {
		this.SlideName = Slide;
		this.LinkName = Link;
	},

	Slide:function( Id ) {
		if(Id == this.active) {
			return false;
		}
		if(this.SlideName.length === 0 || this.LinkName.length === 0 ) {
			alert('Please run Initialize!'); return false;
		}

		var OnSlide = document.getElementById(this.SlideName + Id);
		var OffSlide = document.getElementById(this.SlideName + this.active);
		var OnLink = document.getElementById(this.LinkName + Id );
		var OffLink = document.getElementById(this.LinkName + this.active);
		
		OnLink.className = this.clsLink + ' ' + this.clsOn;
		OffLink.className = this.clsLink + ' ' + this.clsOff;
		OnSlide.className = this.clsSlide + ' ' + this.clsShow;
		OffSlide.className = this.clsSlide + ' ' + this.clsHide;
		this.active = Id;
		return false;
	},
	
	AutoUpdate:function(UpdateTime) {
		if( !this.pause ) {
			if( this.active < this.gamecount ) {
				if(document.getElementById(this.SlideName + '' + (this.active + 1)) !== null) {
					this.Slide(this.active + 1);
				} else {
					this.Slide(1);
				}
			} else {
				this.Slide(1);
			}
		}
		if(UpdateTime != undefined)
			this.UpdateTime = UpdateTime;
		setTimeout("Billboard.AutoUpdate()", this.UpdateTime);
	}
};