function loadCategory(host, obj, fk_value, form, subcategory) {
	var subcategory;
	this.obj = obj;
	resetSelect(obj);
	if (fk_value && fk_value != "") {
		url = host + '/category.php?category_id=' + fk_value;
		ajax_loadResult(url, '', fk_value, subcategory);
	}else {
		return false;
	}
}
			
function ajax_loadXMLDoc(url) {
	// branch for native XMLHttpRequest object
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
		req.onreadystatechange = ajax_processReqChange;
		req.open("GET", url, true);
		req.send(null);
	// branch for IE/Windows ActiveX version
	} else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
		if (req) {
			req.onreadystatechange = ajax_processReqChange;
			req.open("GET", url, true);
			req.send();
		}
	}
}

function ajax_processReqChange() {

	// only if req shows "complete"
	if (req.readyState == 4) {
		// only if "OK"
		if (req.status == 200) {
			
			// ...processing statements go here
			xmlResponse = req.responseXML;
            txtResponse = req.responseText;
			
			if(!xmlResponse || xmlResponse.childNodes.length==0){ 
              xmlResponse = (new DOMParser()).parseFromString(txtResponse, "text/xml");
            } 
			
			response  = xmlResponse;

			if (response) {
				var result = new Array();
				for (i=0; i < response.getElementsByTagName('id').length; i++) {
					result[i] = {'id': response.getElementsByTagName('id')[i].firstChild.data, 'name': response.getElementsByTagName('name')[i].firstChild.data, 'obj_name': response.getElementsByTagName('obj_name')[i].firstChild.data};
				}
				//alert(result);
				ajax_loadResult('',result);
				//unlockLocation();
			}
		} else {
			alert("There was a problem retrieving the XML data:\n" + req.statusText);
		}
	}
}


function ajax_resetSelect(obj) {
	while (obj.options.length>1) {
		deleteIndex=obj.options.length-1;
		obj.options[deleteIndex]=null;
	}
}

function ajax_loadResult(url, result) {
	subcategory=false;
	var subcategory;
	
	if (result != '') {
		// Response mode
		for (i=0; i < result.length; i++) {
			document.getElementById(result[i].obj_name).options[document.getElementById(result[i].obj_name).options.length] = new Option(result[i].name,result[i].id);
			
		}
	} else if (url != '') {
		// Input mode
		//alert(ajax_loadXMLDoc(url));
		return (ajax_loadXMLDoc(url));
	}
	if(subcategory!==true) Select_Sub();
}