function trim(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}
 
function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
 
function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

function getCheckedValue(radioObjx) {
	radioObj=document.getElementsByName(radioObjx);
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}

function showObj(objName){
	document.getElementById(objName).style.display='';
}
function hideObj(objName){
	document.getElementById(objName).style.display='none';
}

function getWindowHeight() {
	var windowHeight = 0;
	if (typeof(window.innerHeight) == 'number') {
		windowHeight = window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			windowHeight = document.documentElement.clientHeight;
		}
		else {
			if (document.body && document.body.clientHeight) {
				windowHeight = document.body.clientHeight;
			}
		}
	}
	return windowHeight;
}
function getWindowWidth() {
	var windowWidth = 0;
	if (typeof(window.innerWidth) == 'number') {
		windowWidth = window.innerWidth;
	}
	else {
		if (document.documentElement && document.documentElement.clientWidth) {
			windowWidth = document.documentElement.clientWidth;
		}
		else {
			if (document.body && document.body.clientWidth) {
				windowWidth = document.body.clientWidth;
			}
		}
	}
	return windowWidth;
}
function centerObject(obj) {
	if (document.getElementById) {
		var contentElement = document.getElementById(obj);
		
		var windowHeight = getWindowHeight();
		var windowWidth = getWindowWidth();
		
		if (windowHeight > 0) {
			var contentHeight = contentElement.offsetHeight;
			if (windowHeight - contentHeight > 0) {
				contentElement.style.position = 'fixed';
				contentElement.style.top = ((windowHeight / 2) - (400 / 2)) + 'px';
			}
			else {
				contentElement.style.position = 'static';
			}
		}
		if (windowWidth > 0) {
			var contentWidth = contentElement.offsetWidth;
			if (windowWidth - contentWidth > 0) {
				contentElement.style.position = 'fixed';
				contentElement.style.left = ((windowWidth / 2) - (400 / 2)) + 'px';
			}
			else {
				contentElement.style.position = 'static';
			}
		}
	}
}


var divTag = document.createElement("div");
divTag.id = "center_div";
divTag.className ="center_div";
divTag.style.display ='none';

var divTag2 = document.createElement("div");
divTag2.id = "center_div2";
divTag2.className ="center_div2";
divTag2.style.display ='none';	


    document.body.appendChild(divTag);
	document.body.appendChild(divTag2);



function showCenterDiv(title){
	centerObject('center_div');
	document.getElementById('center_div').innerHTML=document.getElementById('centerDivDefaultBody').value;
	document.getElementById('center_div_title').innerHTML=title;
	document.getElementById('center_div').style.display='block';
	//document.getElementById('center_div2').style.display='block';
}

function hideCenterDiv(){
	document.getElementById('center_div').style.display='none';
	document.getElementById('center_div2').style.display='none';
}

function setCenterDiv(val){
	document.getElementById('center_div_content').innerHTML=val;
}

function showRegister(){
	showCenterDiv('التسجيل');
	ajaxCall('load_ajax','page=register');
}

function showForgot(){
	showCenterDiv('استرجاع كلمة المرور');
	ajaxCall('load_ajax','page=forgot_password');
}

function showLogin(){
	showCenterDiv('الدخول');
	ajaxCall('load_ajax','page=login');
}

function showChPass(){
	showCenterDiv('تغيير كلمة المرور');
	ajaxCall('load_ajax','page=change_password');
}

function ajaxRegister(reg_stats){
	var reg_email=document.getElementById('reg_email').value;
	var reg_pass=document.getElementById('reg_pass').value;
	var reg_pass2=document.getElementById('reg_pass2').value;
	var reg_user=document.getElementById('reg_user').value;
	
	var param='reg_email='+encodeURIComponent(reg_email);
	param+='&reg_pass='+encodeURIComponent(reg_pass);
	param+='&reg_pass2='+encodeURIComponent(reg_pass2);
	param+='&reg_user='+encodeURIComponent(reg_user);
	param+='&reg_stats='+encodeURIComponent(reg_stats);
	
	document.getElementById(reg_stats).innerHTML='<img src="images/loader.gif"> جاري التسجيل ...';
	
	ajaxCall('register',param);
}

function password_change(reg_stats){
	var old_pass=document.getElementById('old_pass').value;
	var pass=document.getElementById('pass').value;
	var pass2=document.getElementById('pass2').value;
	var reg_stats='reg_stats';
	
	var param='old_pass='+encodeURIComponent(old_pass);
	param+='&pass='+encodeURIComponent(pass);
	param+='&pass2='+encodeURIComponent(pass2);
	param+='&reg_stats='+encodeURIComponent(reg_stats);
	
	document.getElementById(reg_stats).innerHTML='<img src="images/loader.gif"> جاري الحفظ ...';
	
	ajaxCall('change_pass',param);
}

function ajaxLogin(reg_stats){
	var reg_email=document.getElementById('reg_email').value;
	var reg_pass=document.getElementById('reg_pass').value;
	var reg_remember=0;
	if (document.getElementById('reg_remember').checked==true){
		reg_remember=1;
	}
	
	var param='reg_email='+encodeURIComponent(reg_email);
	param+='&reg_pass='+encodeURIComponent(reg_pass);
	param+='&reg_remember='+encodeURIComponent(reg_remember);
	
	document.getElementById(reg_stats).innerHTML='<img src="images/loader.gif"> جاري الدخول ...';
	
	ajaxCall('login',param);
}

function doLogout(){
	if (confirm('متأكد من تسجيل الخروج')){
		ajaxCall('logout','');
	}
}

function loadNames(){
	showCenterDiv('ادارة الاسماء المستعارة');
	ajaxCall('load_names','');
}

function addName(theName){
	showCenterDiv('ادارة الاسماء المستعارة');
	setCenterDiv('<img src="images/loader.gif"> جاري اضافة الاسم ...');
	var param='new_name='+encodeURIComponent(theName);
	param+='&reg_stats=center_div_content';
	ajaxCall('add_name',param);
}

function password_reset(resemail){
	//showCenterDiv('استرجاع كلمة المرور');
	document.getElementById('reg_stats').innerHTML='<img src="images/loader.gif"> الرجاء الانتظار';
	var param='reset_email='+encodeURIComponent(resemail);
	param+='&reg_stats=reg_stats';
	ajaxCall('password_request',param);
}

function makeDefaultName(nid){
	showCenterDiv('ادارة الاسماء المستعارة');
	setCenterDiv('<img src="images/loader.gif"> جاري اضافة الاسم ...');
	var param='id='+encodeURIComponent(nid);
	ajaxCall('set_default_name',param);
}

function deleteName(nid){
	showCenterDiv('ادارة الاسماء المستعارة');
	setCenterDiv('<img src="images/loader.gif"> جاري حذف الاسم ...');
	var param='id='+encodeURIComponent(nid);
	ajaxCall('delete_n',param);
}

function resizeText(multiplier) {
	var dbs=document.getElementById('subject_content');
  if (dbs.style.fontSize == "") {
    dbs.style.fontSize = "1.0em";
  }
  dbs.style.fontSize = parseFloat(dbs.style.fontSize) + (multiplier * 0.2) + "em";
}

function flipBox(box,img,id) {
	var tmp; 
	if (document.getElementById(img+'_' + id).src.indexOf('_on') == -1) { 
		tmp = document.getElementById(img+'_' + id).src.replace('_off', '_on');
		document.getElementById(box+'_' + id).style.display = 'none';
		document.getElementById(img+'_' + id).src = tmp;
	} else { 
		tmp = document.getElementById(img+'_' + id).src.replace('_on', '_off');
		document.getElementById(box+'_' + id).style.display = 'block';
		document.getElementById(img+'_' + id).src = tmp;
	} 
}