// JavaScript Document
var pageRequest;
var page2Request;
var page3Request;
var page4Request;
var page5Request;



function changemenu(page)
{
	if (page == 'home')
	{
		imagename = "images/frontimage_1.png";
	}
	if (page == 'contact')
	{
		imagename = "images/frontimage_2.png";
	}
	if (page == 'systeembeheer')
	{
		imagename = "images/frontimage_3.png";
	}
	if (page == 'web')
	{
		imagename = "images/frontimage_4.png";
	}
	if (page == 'hsw')
	{
		imagename = "images/frontimage_5.png";
	}

	filename = '<img src="'+imagename+'" height="400" width="400">';

	var object = document.getElementById('contentleft');
	object.innerHTML = filename; 
	
	
	myid = 'contentright';
	if (window.XMLHttpRequest)
	{
		pageRequest = new XMLHttpRequest();
	}
	else
		if (window.ActiveXObject)
		{
			pageRequest = new ActiveXObject("Microsoft.XMLHTTP");
		}
		else 
		{
			return false;				
		}
	pageRequest.onreadystatechange = function()
	{
		filterData(pageRequest,myid);
	}
	var completeurl='ajax/changepage.php?page='+page;

	pageRequest.open('GET',completeurl,true);
	pageRequest.send(null);
}





//--------------------------------------------------------------------------------------
// FILTER DATA
//--------------------------------------------------------------------------------------

function filterData(pageRequest,myid)
{
	var object = document.getElementById(myid);

	if (pageRequest.readyState == 4)
	{
		if (pageRequest.status == 200)
		{
			object.innerHTML = pageRequest.responseText;
		}
		else if (pageRequest.status == 404) object.innerHTML = 'Sorry, information is currently not available';
		else object.innerHTML = 'Sorry, there seems to be some kind of problem';
	}
}