codazoda - pastebin.com/iSQYG4DY

gistfile1.js

// Create the Iso class
function Iso() {

	// Public Properties
	this.canvas = '';
	this.context = '';

}

Iso.prototype.init = function(div) {

	this.canvas = document.getElementById(div);
	this.context = this.canvas.getContext('2d');
	
}

Iso.prototype.draw = function (x, y, z, file) {

	// Load the image tile
	var imageTile = new Image();
	imageTile.src = file;

	// Calculate the position
	var calcX = x;
	var calcY = y;

	// Draw the image tile
	this.context.drawImage(imageTile, calcX, calcY);

}