var IFrameObj; // our IFrame object

//alert(navigator.userAgent);

function callRPC() {
	if (!document.createElement) {return true};
	var IFrameDoc;
	// var URL = 'prrpc.html';
	if (!IFrameObj && document.createElement) {
		// create the IFrame and assign a reference to the
		// object to our global variable IFrameObj.
		// this will only happen the first time 
		// callToServer() is called
		try {
			var tempIFrame=document.createElement('iframe');
			tempIFrame.setAttribute('id','RSIFrame');
			tempIFrame.style.border='0px';
			tempIFrame.style.width='0px';
			tempIFrame.style.height='0px';
			IFrameObj = document.body.appendChild(tempIFrame);
			
			if (document.frames) {
				// this is for IE5 Mac, because it will only
				// allow access to the document object
				// of the IFrame if we access it through
				// the document.frames array
				IFrameObj = document.frames['RSIFrame'];
			}
		} catch(exception) {
			// This is for IE5 PC, which does not allow dynamic creation
			// and manipulation of an iframe object. Instead, we'll fake
			// it up by creating our own objects.
			iframeHTML='<iframe id="RSIFrame" style="';
			iframeHTML+='border:0px;';
			iframeHTML+='width:0px;';
			iframeHTML+='height:0px;';
			iframeHTML+='"><\/iframe>';
			document.body.innerHTML+=iframeHTML;
			IFrameObj = new Object();
			IFrameObj.document = new Object();
			IFrameObj.document.location = new Object();
			IFrameObj.document.location.iframe = document.getElementById('RSIFrame');
			IFrameObj.document.location.replace = function(location) {
				this.iframe.src = location;
			}
		}
	}
	
	if (navigator.userAgent.indexOf('Gecko') !=-1 && !IFrameObj.contentDocument) {
		// we have to give NS6 a fraction of a second
		// to recognize the new IFrame
		setTimeout("callRPC(arguments)",10);
		return false;
	}
	
	if (IFrameObj.contentDocument) {
		// For NS6
		IFrameDoc = IFrameObj.contentDocument; 
	} else if (IFrameObj.contentWindow) {
		// For IE5.5 and IE6
		IFrameDoc = IFrameObj.contentWindow.document;
	} else if (IFrameObj.document) {
		// For IE5
		IFrameDoc = IFrameObj.document;
	} else {
		return true;
	}
	if (document.location.href.indexOf('?') > -1)
		qoe = '&';
	else
		qoe = '?';
	var qstr = document.location.href + qoe + 'rpccall=1' + '&funct=' + escape(arguments[0]);
	for (var i = 1; i < arguments.length; i++)
		{
		if (arguments[i] == '')
			qstr += '&prms[' + (i - 1) + ']=__rpc_empty_value__';
		else
			qstr += '&prms[' + (i - 1) + ']=' + escape(arguments[i]);
		}

	try 
		{
		IFrameDoc.location.replace(qstr);
		}
	catch (exception)
		{
		alert("ATTENZIONE: per qualche motivo non riesco" +
				" a chiamare una funzione di controllo." + 
				" Alcune funzionalita' non sono quindi disponibili.\n\n" +
				exception);
		}
	
	return false;
}
	
function handleResponse(str) {
	alert(str);
}
function showRPCErr(msg) {
	alert(msg);
}