// JavaScript Document

function gallerypic() {

	this.mainimage = document.getElementById("mainimage");
	this.imagelist = new Array();
	this.imagepointer = 0;
	
	this.addimage = function(filename) {
		this.imagelist.push(filename);
	}
	
	this.pickimage = function(imagenum) {
		this.imagepointer = imagenum;
		this.mainimage.src = "contentimages/gallery/"+this.imagelist[this.imagepointer];
	}
	
	this.nextimage = function () {
					this.imagepointer += 1;
					if (this.imagepointer > this.imagelist.length-1) {
						this.imagepointer = 0;
					}
					this.mainimage.src = "contentimages/gallery/"+this.imagelist[this.imagepointer];				
	}
	this.previousimage = function () {
					this.imagepointer -= 1;
					if (this.imagepointer < 0) {
						this.imagepointer = this.imagelist.length-1;
						
					}
					this.mainimage.src = "contentimages/gallery/"+this.imagelist[this.imagepointer];
	}
}