var QUOTES_NUMBER = 32;

function load_page(html, params)

{

	if (params != "")

		html += "?";	

	window.location = html + params;	

	//window.location.reload();

}

function google_an1()

{

    var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");

    document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));    

}

function google_an2()

{

    var pageTracker = _gat._getTracker("UA-2137333-1");

    pageTracker._initData();

    pageTracker._trackPageview();

}

function google_an()

{	    

	google_an1();

	if (typeof(_gat) == "object")

	    google_an2();	

}

function http_request_object()

{

    var xmlHttpObject = null;

    if (typeof(XMLHttpRequest) != "undefined") 

    {

        xmlHttpObject = new XMLHttpRequest();

    }

    //For IE6 and IE5

    if (xmlHttpObject == null) 

    {

        try 

        {

            xmlHttpObject = new ActiveXObject("Microsoft.XMLHTTP");

        }   

        catch(e) 

        {

            try 

            {

                xmlHttpObject = new ActiveXObject("Msxml2.XMLHTTP");

            }

            catch(e) 

            {

                xmlHttpObject = null;

            }

        }

    }

    return xmlHttpObject;

}

function load_header(current)

{

    var file;

	if (current == "home")

        file = "/homenav.html";

    else if (current == "resume")

        file = "/resumenav.html";

    else if (current == "howiwork")

        file = "/howiworknav.html";

    else if (current == "personalwork")

        file = "/personalworknav.html";

    else if (current == "tutorials")

        file = "/tutorialsnav.html";

    else if (current == "contact")

        file = "/contactnav.html";

	var currentFile = self.location.hostname + self.location.pathname;		

	var request = http_request_object();

	var url  = "http://" + self.location.hostname + file;

	request.open("GET", url, false);

	request.setRequestHeader("User-Agent", navigator.userAgent);

	request.send(null)

	// if (oRequest.status == 200) alert(oRequest.responseText);

	// else alert("Error executing XMLHttpRequest call!");	

	//document.write(url);

    document.getElementById('header').innerHTML = request.responseText;

    //document.write(request.responseText);

    //alert(request.responseText);

}

function load_sidebar()

{

    var file = "/sidebar.html";

	var currentFile = self.location.hostname + self.location.pathname;		

	var request = http_request_object();

	var url  = "http://" + self.location.hostname + file;	

	request.open("GET", url, false);

	request.setRequestHeader("User-Agent", navigator.userAgent);

	request.send(null)

	// if (oRequest.status == 200) alert(oRequest.responseText);

	// else alert("Error executing XMLHttpRequest call!");	

	//document.write(url);

	//document.write(request.responseText);

    document.getElementById('sidebar').innerHTML = request.responseText;

}

function load_random_quote()

{   

   var file = "/quotes/quote" + Math.floor(Math.random() * QUOTES_NUMBER + 1) + ".html";

	var currentFile = self.location.hostname + self.location.pathname;		

	var request = http_request_object();

	var url  = "http://" + self.location.hostname + file;	

	request.open("GET", url, false);

	request.setRequestHeader("User-Agent", navigator.userAgent);

	request.send(null)

	// if (oRequest.status == 200) alert(oRequest.responseText);

	// else alert("Error executing XMLHttpRequest call!");	

	//document.write(url);

	//document.write(request.responseText);

    document.getElementById('random_quote').innerHTML = request.responseText;

}

function load_footer()

{

	var file = "/footer.html";

	var currentFile = self.location.hostname + self.location.pathname;		

	var request = http_request_object();

	var url  = "http://" + self.location.hostname + file;	

	request.open("GET", url, false);

	request.setRequestHeader("User-Agent", navigator.userAgent);

	request.send(null)

	// if (oRequest.status == 200) alert(oRequest.responseText);

	// else alert("Error executing XMLHttpRequest call!");	

	//document.write(url);

	//document.write(request.responseText);

    document.getElementById('footer').innerHTML = request.responseText;

}

// Mandelbrot functions

function Complex(real, imag) 

{

	this.real = real;

	this.imag = imag;

}

var MIN_C = new Complex(-2.2, -1.4);

var MAX_C = new Complex(1.0, 1.4);

var min_c = MIN_C;

var max_c = MAX_C;

var max_iter = 100;

var zoom = 1.0;

var resolution = 3;

var bailout = 4.0;

function Result(z, iter) 

{

	this.z = z;

	this.iter = iter;

}

function complex_quad(c)

{

	return new Complex(Math.pow(c.real, 2) - Math.pow(c.imag, 2), 

		2.0 * c.real * c.imag);

}

function complex_quad_value(c)

{

	return Math.pow(c.real, 2) + Math.pow(c.imag, 2);

}

function complex_add(c1, c2)

{

	return new Complex(c1.real + c2.real, c1.imag + c2.imag);

}

function complex_equal(c1, c2)

{	

	return (c1.real == c2.real) && (c1.imag == c2.imag);

}

function iterate(z, c) 

{

	z_quad = complex_quad(z);

	return new Complex(z_quad.real + c.real, z_quad.imag + c.imag);

}

function test(c, max_iter) 

{

	var iter = 0;

	var z = new Complex(0.0, 0.0);

	var last_z = new Complex(-1.0, 0.0);

	var quad_z = complex_quad_value(z);

	while (iter < max_iter

		&& !complex_equal(z, last_z)

		&& quad_z <= bailout)

	{

		last_z = z;

		z = iterate(z, c);

		quad_z = complex_quad_value(z);

		iter++;

	}

	return new Result(quad_z, iter);

}

function draw(iter, dx, dy, dz, dres)

{  

	var canvas = document.getElementById('mandelbrot'); 

	if (canvas.getContext)

	{  

		zoom += dz;

		var ctx = canvas.getContext('2d');

		if (dres != 0)

		{		

			resolution = Math.max(1, resolution + dres);

		}

		var width = canvas.width;

		var height = canvas.height;

		var dim = Math.max(width, height);

		var dim_ratio = Math.round(width / height);	

		var diff_c = new Complex(max_c.real - min_c.real,

			max_c.imag - min_c.imag);

		dx_min = diff_c.real / 100 * (dx + dz);

		dx_max = diff_c.real / 100 * (dx - dz);

		dy_min = diff_c.imag / 100 * (dy + dz);

		dy_max = diff_c.imag / 100 * (dy - dz);

		var min_inc = new Complex(dx_min * dim_ratio / 2.0, dy_min);

		var max_inc = new Complex(dx_max * dim_ratio / 2.0, dy_max);

		min_c = complex_add(min_c, min_inc);

		max_c = complex_add(max_c, max_inc);

		max_iter += iter;

		diff_c = new Complex(max_c.real - min_c.real,

			max_c.imag - min_c.imag);

		for (var y = 0; y < height; y += resolution) 

		{

			for (var x = 0; x < width; x += resolution) 

			{    			

				var c = new Complex(min_c.real + diff_c.real / dim * x, 

					min_c.imag + diff_c.imag / dim * y);  	

			 	var result = test(c, max_iter);	

		 		var r = Math.min(255, Math.pow(Math.max(0, 

		 			(result.iter - max_iter / 20.0)), 2));

				var g = Math.min(255, Math.pow(Math.max(0, 

					(result.iter - max_iter / 25.0)), 2));			

		 		var b = Math.min(255, Math.pow(Math.max(0, 

					(result.iter - max_iter / 20.0)), 2));

		 		var colour = r + "," + g + "," + b;

		 		ctx.fillStyle = "rgb(" + colour + ")"; 

				ctx.fillRect(x, y, resolution, resolution);				 

			}

  		}

	}  

}