function GetXmlHttpObject()
{
	var xmlHttp=null;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e) {
		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}



function stateChanged()
{
	if (xmlHttp.readyState == 4 || xmlHttp.readyState=="complete") {
		document.getElementById('rand_pics').innerHTML=xmlHttp.responseText;
	}
}

var xmlHttp;

function nextImage()
{
	xmlHttp = GetXmlHttpObject();

	var url="rand_pics.php";
	url=url+"?next_image=";


	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);

}

function prevImage()
{
	xmlHttp = GetXmlHttpObject();

	var url="rand_pics.php";
	url=url+"?prev_image=";


	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);

}