//------------------------------------------------
//var provincia = document.getElementById('idcat_provincia');

function _startLoad(sSrc,obj) {
	
	if(document.getElementById('idcat_provincia'))
	{
		document.getElementById('idcat_provincia').innerHTML='<select class="field" style="width:230px;" name="idcat"><option value="0">LOADING...</option></select>';
		
		idcat = obj.value
		sSrc = sSrc+"?idcat="+idcat;

var xmlHttp = XmlHttp.create();
		
		timer_onloading=window.setTimeout("onLoading(true)","500");
		
		xmlHttp.open("GET", sSrc, true);	// async
		xmlHttp.onreadystatechange = function () {
			if (xmlHttp.readyState == 4) {
				_provinciaLoaded(xmlHttp.responseText);
				 
				window.clearTimeout(timer_onloading)
				onLoading(false);
			}
		};
		// call in new thread to allow ui to update
		window.setTimeout(function () {
			xmlHttp.send(null);
		}, 10);
	}
}

function _provinciaLoaded(oXmlDoc) 
{
	//alert(oXmlDoc)
	if(document.getElementById('idcat_provincia'))
		document.getElementById('idcat_provincia').innerHTML = oXmlDoc;
}