var xmlHttp= new Array();

/**
 *	creates a xMLHttpRequest-object
 *
 *	@param	object				the XMLHttpRequest-object
 */
function GetXmlHttpObject() {
	var objXMLHttp=null
	if (window.XMLHttpRequest) {
		objXMLHttp=new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	return objXMLHttp
}

/**
 * sets the visibility of the indicator
 *
 * @param	string		view	the status of the indicator (hidden|visible)
 */
function setIndicator(view) {
	document.getElementById('indicator').style.visibility=view;
}

/**
 * Makes the ajax-connection
 *
 * @param	string		url		the url
 * @param	string		funct	the function that has to be executed when the state is changed
 * @param	int			i		an integer for simultanous connections
 */
function doIt(url, funct, i) {
	xmlHttp[i]=GetXmlHttpObject()
	setIndicator('visible');
	if (xmlHttp[i]==null) {
		alert ("Error: your browser doesn't support HTTP Request");
		return false;
	}
	url="http://gallery.verkoyen.eu/"+url+"&sid="+Math.random();
	xmlHttp[i].onreadystatechange=funct;
	xmlHttp[i].open("GET",url,true);
	xmlHttp[i].send(null);
	return true;
}