//Gets the browser specific XmlHttpRequest Object
function getXmlHttpRequestObject() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	} else {
		alert("You must update your browser.");
	}
}

//Our XmlHttpRequest object to get the auto suggest
var obj = getXmlHttpRequestObject();

var pages = new Array();
pages[0] = 'chamber';
pages[1] = 'work';
pages[2] = 'visit';
pages[3] = 'live';
pages[4] = 'calendar';
var root = '/';
var current_tab = 'chamber';

function getPage(page)
{
	//unhighlight all pages	

	for (i = 0; i < 6; i ++)
	{
		tab = pages[i];
		cell = document.getElementById(tab + '_tab');
		if (cell)
		{
			if (tab == page)
			{
				cell.style.backgroundImage = 'url(' + root + 'images/tabs/up.gif)';
			} else {
				cell.style.backgroundImage = 'url(' + root + 'images/tabs/over.gif)';
			}
		}
  }
  current_tab = page;

/*
	// highlight our page
	link = document.getElementById(page + '_link');
	link.innerHTML = '<img src="' + root + 'images/tabs/' + page + '-over.gif" name="' + page + '" border="0">';
*/
				
	if (obj.readyState == 4 || obj.readyState == 0) {
		obj.open("GET", root + 'ajax/home_' + page + '.php', true);
		obj.onreadystatechange = function ()
		{
			if (obj.readyState == 4)
			{
				var ss = document.getElementById('ajax_content');
				ss.innerHTML = '';
				var str = obj.responseText;
				ss.innerHTML = str;
			}
		}; 
		obj.send(null);
	}		
}

function overTab(tab)
{
	if (current_tab != tab)
	{
		cell = document.getElementById(tab + '_tab');
		cell.style.backgroundImage = 'url(' + root + 'images/tabs/up.gif)';
	}
}

function outTab(tab)
{
	if (current_tab != tab)
	{
		cell = document.getElementById(tab + '_tab');
		cell.style.backgroundImage = 'url(' + root + 'images/tabs/over.gif)';
	}
}

function checkRegister(id)
{
	first_name = document.getElementById('register_first_name_' + id).value;
	last_name = document.getElementById('register_last_name_' + id).value;
	email = document.getElementById('register_email_' + id).value;
	
	if (first_name == '') { return; }
	if (last_name == '') { return; }
	if (email == '') { return; }

	//post the form
	form = document.getElementById('register_form_element_' + id);
	document.getElementById('paypal_email_' + id).value = email;
	document.getElementById('paypal_first_name_' + id).value = first_name;
	document.getElementById('paypal_last_name_' + id).value = last_name;

	alert('You will be taken to Paypal to complete registration payment');

	form.submit();
}