function fAjaxRequest(_sUrl, _sFunction, _bSynchron) {

	oRequest = false;



	if(window.XMLHttpRequest) {

		oRequest = new XMLHttpRequest();

	}

	else if(window.ActiveXObject) {

		if(oRequest = new ActiveXObject("Msxml2.XMLHTTP")) {

		} else {

			oRequest = new ActiveXObject("Microsoft.XMLHTTP")

		}

	}



	if(oRequest) {

		if(_sFunction) {

			oRequest.onreadystatechange =  new Function (_sFunction +"();");

		}

		oRequest.open('GET', _sUrl, _bSynchron);

		oRequest.send(null);

		return true;

	}

	else return false;

}

function startUpload(){
    document.getElementById('f1_upload_process').style.visibility = 'visible';
    return true;
}