// Some ajax functions
http = createRequestObject();

function getGrid(id) {
//	showLoading();
	http.open('get', 'ajax.portfolio.php?mode=1&pf='+id);
	http.onreadystatechange = httpResponse;
	http.send(null);
}

function getContact() {
//	showLoading();
	http.open('get', 'ajax.portfolio.php?mode=2');
	http.onreadystatechange = httpResponse;
	http.send(null);
}

function httpResponse() {
	if (http.readyState == 4) {
		// Finished loading the response
		var m = document.getElementById('content');
		m.innerHTML = http.responseText;
//		alert(http.responseText);
		//hideLoading();
	}
}

// BROWSER DETECT__________________________________________________________________________________
// get the browser specific XMLHTTPRequest object
function createRequestObject() {
	var http_request = false;
	if (window.XMLHttpRequest) {
		// Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) {
		// Internet Explorer
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!http_request) {
		// browser cannot support AJAX
		alert('Cannot create XMLHTTP instance');
		return false;
	} else {
		return http_request;
	}
}

// LOADING FUNCTIONS_______________________________________________________________________________
function showLoading() {
	var m = document.getElementById('content');
	m.innerHTML = '<div class="TB_overlayBG"></div>';
}

function hideLoading() {
	var loader = document.getElementById('content');
	loader.style.visibility = 'hidden';
}