function set_cookie ( name, value, exp_y, exp_m, exp_d, path, domain, secure ){
  var cookie_string = name + "=" + escape ( value );
  if (exp_y)
  {
    var expires = new Date ( exp_y, exp_m, exp_d );
    cookie_string += "; expires=" + expires.toGMTString();
  }
  if (path)
        cookie_string += "; path=" + escape ( path );
  if (domain)
        cookie_string += "; domain=" + escape ( domain );  
  if (secure)
        cookie_string += "; secure";
          
  document.cookie = cookie_string;
}

function get_cookie ( cookie_name ){
  var results = document.cookie.match ( '(^|;) ?' + cookie_name + '=([^;]*)(;|$)' );
  if (results)
    return ( unescape ( results[2] ) );
  else
    return null;
}

function delete_cookie ( cookie_name ){
  var cookie_date = new Date ( );  // current date & time
  cookie_date.setTime ( cookie_date.getTime() - 1 );
  document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}

function display_element(id,mode){
	var target=document.getElementById(id);
	if(target.style.display==''){
			target.style.display='none';
	}else{
			target.style.display='';
	}
	return false;
	if(mode=='show'){
		target.style.display='';
	}else if(mode=="hide"){
			target.style.display='none';
	}else{
		target.style.display='none';
	}
	return false;
}
function confirm_delete(){
	return window.confirm("Are you sure you want to delete this record?");
}
function IsValidEmail(emailid){
        var targt=document.getElementById(emailid);
        targt.focus();
        var str = targt.value; 
        var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; // not valid 
        var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,4})(\]?)$/; // valid 
        if (!reg1.test(str) && reg2.test(str)) { // if syntax is valid 
                return true; 
        }else{ 
                alert("Please enter a valid Username!");
                return false; 
        } 
}
function validate_User_form(nform){
	if(!IsValidEmail('t_UserName')){
		return false;
	}
	
	if(!nform.t_fname.value){
		alert("Please enter your first name!");
		nform.t_fname.focus();
		return false;
	}
	if(!nform.t_lname.value){
		alert("Please enter your last name!");
		nform.t_lname.focus();
		return false;
	}
	if(!nform.i_AccessLevel.value){
		alert("Please select an access level!");
		nform.i_AccessLevel.focus();
		return false;
	}
	return true;
}
function display_hide_rows(row2showid,row2hideid){
	var row2show	=	document.getElementById(row2showid);
	var row2hide	=	document.getElementById(row2hideid);
	
	row2show.style.display='';
	row2hide.style.display='none';
	return false;
}
function validate_books_caegory(nform){
	if(!nform.t_Category_Name.value){
		alert("Please enter category name!");
		nform.t_Category_Name.focus();
		return false;
	}
	/*if(!nform.i_CategoryParentID.value){
		alert("Please select parent category!");
		nform.i_CategoryParentID.focus();
		return false;
	}*/
	return true;
}
function validate_Publisher(nform){
if(!nform.publishername.value){
		alert("Please enter Publisher name!");
		nform.publishername.focus();
		return false;
	}
}
function valdiate_book_author(nform){
	if(!nform.t_AuhtorName.value){
		alert("Please enter Author Name!");
		nform.t_AuhtorName.focus();
		return false;
	}
	if(!nform.author_image.value){
		alert("Please add Author image!");
		nform.author_image.focus();
		return false;
	}
	
	if(nform.authorimages.value.trim()){
		ar=nform.authorimages.value.split(".");
		ext=ar[ar.length-1].toLowerCase();
		if(ext!='jpg' && ext!='jpeg' && ext!='gif'){
			alert("Invalid File Type allowed: jpg,jpeg and gif");
			return false;
		}
	}
	return true;
}
function valdiate_book_author_add(nform){
	if(!nform.t_AuhtorName.value.trim()){
		alert("Please enter Author Name!");
		nform.t_AuhtorName.focus();
		return false;
	}
	if(!nform.LangID.value.trim()){
		alert("Please select Language!");
		nform.LangID.focus();
		return false;
	}
	
	if(nform.author_image1.value.trim()){
		ar=nform.author_image1.value.split(".");
		ext=ar[ar.length-1].toLowerCase();
		if(ext!='jpg' && ext!='jpeg' && ext!='gif'){
			alert("Invalid File Type allowed: jpg,jpeg and gif");
			return false;
		}
	}
	return true;
}
String.prototype.trim = function(){
	return this.replace(/(^\s*)|(\s*$)/g, "");
}
/*
function validate_author(nform){
	if(!nform.t_AuhtorName.value.trim()){
		alert("Please enter author name!");
		nform.t_AuhtorName.focus();
		return false;
	}
	if(!nform.t_AuhtorName.value.trim()){
		alert("Please enter author name!");
		nform.t_AuhtorName.focus();
		return false;
	}
	return true;
}*/

function hide_unchecked(id,id2){
	if(id.checked==true){
		document.getElementById(id2).style.display="";
	}else{
		document.getElementById(id2).style.display="none";
	}
}
function MessageLang()
{
	alert("Comming Soon");
}


function CheckValidEmail(NForm){
        NForm.username.focus();
        var str = NForm.username.value; 
        var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; // not valid 
        var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,4})(\]?)$/; // valid 
        if (!reg1.test(str) && reg2.test(str)) { // if syntax is valid 
                return true; 
        }else{ 
                alert("Please enter a valid Email!");
                return false; 
        } 
}

function validate_register(rform){

	var fname =document.getElementById("NewFirst").value;
	var lname =document.getElementById("NewLast").value;
	var pass =document.getElementById("Password").value;
	var confpass =document.getElementById("ConfPassword").value;
	
	
	if(fname==""){
		alert("Please enter your First Name!");
		return false;
	}
	if(lname==""){
		alert("Please enter your Last Name!");
		return false;
	}
	if((pass!="")&&(confpass=="")){
		alert("Please enter a Confirmation Password!");
		return false;
	}

	if(pass!=confpass){
		alert("Password is not confirmed correctly!");
		return false;
	}
	return true;
}

function validate_password(rform){
	var passnew = rform.newpass.value;
	var passconf = rform.confpass.value;
	if(passnew.length==0){
		alert("Please enter a new password!");
		return false;
	}
	if(passconf.length==0){
		alert("Please confirm your new password!");
		return false;
	}
	if(passnew != passconf){
		alert("Password is not confirmed correctly!");
		return false;
	}
	return true;
}

function validate_contactUs(cform){
	var fname=cform.fname.value;
	var comment= cform.comment.value;
	
	if(fname==""){
		alert("Please enter your First Name!");
		return false;
	}

	if(!CheckValidEmail(cform)){
		return false;
	}
		
	if(comment==""){
		alert("Please write a comment!");
		cform.comment.focus();
		return false;
	}
	
	if(document.getElementById("code").value==""){
		alert("Please type in the characters!");
		document.getElementById("code").focus();
		return false;
	}

	return true;
	
}