/*
	[Discuz!] (C)2001-2007 Comsenz Inc.
	This is NOT a freeware, use is subject to license terms

	$RCSfile: common.js,v $
	$Revision: 1.6 $
	$Date: 2008/10/16 09:45:38 $
*/

var lang = new Array();
var userAgent = navigator.userAgent.toLowerCase();
var is_opera = userAgent.indexOf('opera') != -1 && opera.version();
var is_moz = (navigator.product == 'Gecko') && userAgent.substr(userAgent.indexOf('firefox') + 8, 3);
var is_ie = (userAgent.indexOf('msie') != -1 && !is_opera) && userAgent.substr(userAgent.indexOf('msie') + 5, 3);

function $(id) {
	return document.getElementById(id);
}

Array.prototype.push = function(value) {
	this[this.length] = value;
	return this.length;
}

function in_array(needle, haystack) {
	if(typeof needle == 'string' || typeof needle == 'number') {
		for(var i in haystack) {
			if(haystack[i] == needle) {
					return true;
			}
		}
	}
	return false;
}



function isUndefined(variable) {
	return typeof variable == 'undefined' ? true : false;
}

function mb_strlen(str) {
	var len = 0;
	for(var i = 0; i < str.length; i++) {
		len += str.charCodeAt(i) < 0 || str.charCodeAt(i) > 255 ? (charset == 'utf-8' ? 3 : 2) : 1;
	}
	return len;
}


function strlen(str) {
	return (is_ie && str.indexOf('\n') != -1) ? str.replace(/\r?\n/g, '_').length : str.length;
}

function updatestring(str1, str2, clear) {
	str2 = '_' + str2 + '_';
	return clear ? str1.replace(str2, '') : (str1.indexOf(str2) == -1 ? str1 + str2 : str1);
}



function trim(str) {
	return (str + '').replace(/(\s+)$/g, '').replace(/^\s+/g, '');
}


function ajaxresponse(objname, data) {
	var x = new Ajax('XML', objname);
	x.get('/ajax.php?inajax=1&' + data, function(s){
		var obj = $(objname);
		if(s != '') {
			obj.style.display = '';
			obj.innerHTML = s;
			obj.className = "warning";
		} else {
			warning(obj, s);
		}
	});
}

function warning(obj, msg) {
	if((ton = obj.id.substr(5, obj.id.length)) != 'password2') {
		$(ton).select();
	}
	obj.style.display = '';
	obj.innerHTML = '<img src="images/check_error.gif" width="13" height="13"> &nbsp; ' + msg;
	obj.className = "warning";
}