var http = getXMLHTTPRequest();
function getXMLHTTPRequest()
{
	var xmlhttp;
	if (window.XMLHttpRequest)
	{// code for IE7+, Firefox, Chrome, Opera, Safari
		xmlhttp=new XMLHttpRequest();
	}
	else
	{// code for IE6, IE5
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	return xmlhttp;
}

function call_cab_web_tab()
{
	var myurl = "home_tabs/cab_web_tab.php";
	http.open("GET", myurl, true );
	http.onreadystatechange = useHttpResponse;
	http.send(null);
	document.getElementById('cabweb').className="tabs_btn tabs_btn_selected";
	document.getElementById('fare_estimate').className="tabs_btn";
	document.getElementById('online').className="tabs_btn";
	document.getElementById('text').className="tabs_btn";
	document.getElementById('phone').className="tabs_btn";
}

function call_fare_estimator_tab()
{
	var myurl = "home_tabs/fare_estimator_tab.php";
	http.open("GET", myurl, true );
	http.onreadystatechange = useHttpResponse;
	http.send(null);
	document.getElementById('cabweb').className="tabs_btn";
	document.getElementById('fare_estimate').className="tabs_btn tabs_btn_selected";
	document.getElementById('online').className="tabs_btn";
	document.getElementById('text').className="tabs_btn";
	document.getElementById('phone').className="tabs_btn";
}

function call_online_tab()
{
	var myurl = "home_tabs/online_tab.php";
	http.open("GET", myurl, true );
	http.onreadystatechange = useHttpResponse;
	http.send(null);
	document.getElementById('cabweb').className="tabs_btn";
	document.getElementById('fare_estimate').className="tabs_btn";
	document.getElementById('online').className="tabs_btn tabs_btn_selected";
	document.getElementById('text').className="tabs_btn";
	document.getElementById('phone').className="tabs_btn";
}

function call_text_tab()
{
	var myurl = "home_tabs/text_tab.php";
	http.open("GET", myurl, true );
	http.onreadystatechange = useHttpResponse;
	http.send(null);
	document.getElementById('cabweb').className="tabs_btn";
	document.getElementById('fare_estimate').className="tabs_btn";
	document.getElementById('online').className="tabs_btn";
	document.getElementById('text').className="tabs_btn tabs_btn_selected";
	document.getElementById('phone').className="tabs_btn";
}
function call_phone_tab()
{
	var myurl = "home_tabs/phone_tab.php";
	http.open("GET", myurl, true );
	http.onreadystatechange = useHttpResponse;
	http.send(null);
	document.getElementById('cabweb').className="tabs_btn";
	document.getElementById('fare_estimate').className="tabs_btn";
	document.getElementById('online').className="tabs_btn";
	document.getElementById('text').className="tabs_btn";
	document.getElementById('phone').className="tabs_btn tabs_btn_selected";
}


function useHttpResponse()
{
	if(http.readyState == 4)
	{
		if(http.status == 200)
		{
			var tab_content = http.responseText;
			document.getElementById('home_tab_content_container').innerHTML = tab_content;
		}
	}
	else
	{
		document.getElementById('home_tab_content_container').innerHTML = "";
	}
}