function GetFormData(formObj) {
	data = new Array(); 

	tf = formObj;
	
	for (var i=0; i < tf.length; ++i) {
		var tagName = tf[i].tagName.toLowerCase(); 
		var name = tf[i].getAttribute('name');
		var value = '';
		
		if (tagName == 'input') {
			switch (tf[i].getAttribute('type')) {
				case null:
				case '':
				case 'text':
				case 'hidden':
				case 'password':
					value = tf[i].value;
					break;
				case 'checkbox': 
				case 'radio':
					if (tf[i].checked) {
						value = tf[i].getAttribute('value'); 
						if (!value) value = 'on';
					} else {
						continue;
					}
					break;
				default:
					continue;
					break;					
			}
		} else if (tagName == 'textarea') {
			value = tf[i].value;
		} else if (tagName == 'select') {
			if (tf[i].multiple) { 
				opt = tf[i].options;
				for (var j=0; j < opt.length; ++j) {
					if (opt[j].selected) {
						o = new Object(); 
						o.name = name; 
						o.value = opt[j].value;
						data.push(o);
					}				
				}
			
				continue; // Мы уже занесли все позиции в массив
			} else {
				value = tf[i].value;
			}
		}
		
		o = new Object(); 
		o.name = name; 
		o.value = value;
		data.push(o); 
	}
	

	return data;
}


function UrlEncode(str) {
	if( typeof encodeURIComponent != 'undefined' &&	typeof encodeURIComponent !=  undefined ) {
		code = encodeURIComponent(str);
	 	code = code.replace( /%20/g , "+" );
		 return code;
	} else {
	 	return str;
	}

}

function HttpRequest(url, requestType, data) {
	reqStr = '';
	for (i=0; i < data.length; ++i) {			
		t = data[i];
		if (reqStr != '') reqStr += '&';
		reqStr += UrlEncode(t.name) + '=' + UrlEncode(t.value);
	}
	
	if (typeof window.ActiveXObject != 'undefined') {
		try {
		 	oReq = new window.ActiveXObject("Microsoft.XMLHTTP");
		} catch(e) {
			alert('no Microsoft.XMLHTTP');
		 	return false;
		}
	} else if (typeof window.XMLHttpRequest != 'undefined') {
		try {
		 	oReq = new XMLHttpRequest();
		} catch(e) {
			alert('no XMLHttpRequest');
			return false;
		}
	}
	
	if (!oReq) {
		alert('Browser does\'nt support XMLHTTP');
		return false;
	}

	if (requestType.toLowerCase() == 'get') {	 		
 		if (url.indexOf('?') == -1) {
 			url += '?' + reqStr;
 		} else {
 			url += '&' + reqStr;
 		}
 
		oReq.open("GET", url, false);
		oReq.setRequestHeader("Content-Type" , "application/x-www-form-urlencoded; charset=UTF-8");
		oReq.send('');
 	} else if( requestType.toLowerCase() == "post" ) {
		oReq.open("POST", url, false);
		oReq.setRequestHeader("Content-Type" , "application/x-www-form-urlencoded; charset=UTF-8");
		oReq.send(reqStr);
	}
	
	if (oReq.status != 200) {
	   alert(oReq.statusText);
	   return false;
	}

	return oReq.responseText;
}

function ServiceFormRequest(func, formObjOrName, myCallBack) {
	if (formObjOrName.tagName.toLowerCase() == 'form') {
		tf = formObjOrName;
	} else {
		// Если это не обьект формы, то предполагаем, что это имя формы
		tf = document.forms[formObjOrName];
	}
	
	if (!tf) { alert("Unable to locate form");	return false; } 
	
	requestType = tf.getAttribute('method');
	data = GetFormData(tf);
	
	o = new Object();
	o.name = 'f';
	o.value = func;
	data.push(o);
	
	
	res = HttpRequest('/php/service.php', requestType, data);

		if (myCallBack) {
		result = myCallBack(res, tf);

	} else {
		result = res;
	}
}

function ServiceRequest(func, data, myCallBack) {
	o = new Object();
	o.name = 'f';
	o.value = func;
	data.push(o);
	
	
	res = HttpRequest('/php/service.php', 'get', data);
	
	if (myCallBack) {
		result = myCallBack(res);
	} else {
		result = res;
	}
	
	
	return result;
}