/**
 * QUYDHNNI CMS: Content management system 2.0
 *
 * @package     quydhnni
 * @author      Nguyen Van Quy
 * @link        http://www.tailoc.net
 * @copyright   Copyright (c) 2010, Nguyen Van Quy
 * @license     http://website20.blogspot.com
 */
function createRequestObject() {
	var xmlhttp;
	try { xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); }
	catch(e) {
		try { xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}
		catch(f) { xmlhttp=null; }
	}
	if(!xmlhttp&&typeof XMLHttpRequest!="undefined") {
		xmlhttp=new XMLHttpRequest();
	}
	return  xmlhttp;
}
var http = createRequestObject();

function format_number(pnumber,decimals){
	if (isNaN(pnumber)) { return 0};
	if (pnumber=='') { return 0};
	
	var snum = new String(pnumber);
	var sec = snum.split('.');
	var whole = parseFloat(sec[0]);
	var result = '';
	
	if(sec.length > 1){
		var dec = new String(sec[1]);
		dec = String(parseFloat(sec[1])/Math.pow(10,(dec.length - decimals)));
		dec = String(whole + Math.round(parseFloat(dec))/Math.pow(10,decimals));
		var dot = dec.indexOf('.');
		if(dot == -1){
			dec += '.'; 
			dot = dec.indexOf('.');
		}
		while(dec.length <= dot + decimals) { dec += '0'; }
		result = dec;
	} else{
		var dot;
		var dec = new String(whole);
		dec += '.';
		dot = dec.indexOf('.');		
		while(dec.length <= dot + decimals) { dec += '0'; }
		result = dec;
	}	
	return result;
}

function lTrim(sString){
	while (sString.substring(0,1) == ' '){
		sString = sString.substring(1, sString.length);
	}
	return sString;
}
function rTrim(sString){   
	while (sString.substring(sString.length-1, sString.length) == ' ')
		{
	sString = sString.substring(0,sString.length-1);
		}
		return sString;
}
function Trim(sString){
	sString = lTrim(sString);
	return rTrim(sString);
}
function IsValidEmail(email)
{
	var filter = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
	return filter.test(email);
}
function ismaxlength(obj,mlength){
	/*
	var mlength=obj.getAttribute? parseInt(obj.getAttribute("maxlength")) : ""
	if (obj.getAttribute && obj.value.length>mlength)
	obj.value=obj.value.substring(0,mlength)
	*/
	if (obj.value.length>mlength)
	obj.value=obj.value.substring(0,mlength)
}