// JavaScript Document



isNS = (navigator.appName == 'Netscape');
isIE = (navigator.appName.indexOf('Microsoft') != -1);
isOP = (navigator.appName == 'Opera');
ns4 = (document.layers);
ie4 = (document.all && !document.getElementById);
ie5 = (document.all && document.getElementById);
ns6 = (!document.all && document.getElementById);

function show_(what) {
 document.getElementById(what).className = 'on';
}

function hide_(what) {
 document.getElementById(what).className = 'off';
}


function clear_(what) {
	var obj = document.getElementById(what);
	obj.value="";
}

function xGetElementById(e) {
	if(typeof(e)!='string') return e;
	if(document.getElementById) e=document.getElementById(e);
	else if(document.all) e=document.all[e];
	else e=null;
	return e;
} 

function checkMail(mail_) {
	var error ='';
	var emailRegxp = /^([\w]+)(.[\w]+)*@([\w]+)(.[\w]{2,3}){1,2}$/;
	if ((emailRegxp.test(mail_) != true) || (mail_ == "")) {
		return false;
	} else {
		return true;
	}
}

function send_mail(form_, pole1, pole2, pole3, lang) {
	var form = document.getElementById(form_);
	var name = document.getElementById(pole1);
	var mail = document.getElementById(pole2);
	var question = document.getElementById(pole3);
	var error = '';
	var email_ = mail.value;
	if((name.value=="") || (mail.value=="") || (question.value=="")) {
		if(lang=='en') {
			error = error+"Please, write all fields marked with *! \r\n";
			} else {
			error = error+"Попълнете всички полета маркирани със *! \r\n";
			}
		}
	if (!checkMail(email_)) {
		if(lang=='en') {
			error = error+"Write a valid e-mail address! \r\n";
			} else {
			error = error+"Попълнете валиден e-mail адрес!";
			}
	}
	if( error == "") {
    form.submit();
  } else {
	 alert(error);
	}
}

function send_career(form_, pole1, pole2, pole3, lang){
	var form = document.getElementById(form_);
	var name = document.getElementById(pole1);
	var mail = document.getElementById(pole2);
	var file = document.getElementById(pole3);
	var error = '';
	var email_ = mail.value;
	if((name.value=="") || (mail.value==""))  {
		if(lang=='en') {
			error = error+"Please, write all fields marked with *! \r\n";
			} else {
			error = error+"Попълнете всички полета маркирани със *! \r\n";
			}
		}
	if (!checkMail(email_)) {
		if(lang=='en') {
			error = error+"Write a valid e-mail address! \r\n";
			} else {
			error = error+"Попълнете валиден e-mail адрес!";
			}
	}
	if (file.value != "") {
				var duljina = file.value.length; 
				var razshirenie2 = file.value.substr((duljina - 3), 3);
				var razshirenie = razshirenie2.toLowerCase();
				if((razshirenie != 'pdf') && (razshirenie != 'doc') && (razshirenie != 'xls') && (razshirenie != 'txt')) { 
				if(lang=='en') {
					error = error+"Please, send only files in doc, xls, txt or pdf type! \r\n";
					} else {
					error = error+"Файловете, които изпращате, трябва да са от тип doc, xls, txt или pdf!"; 
					}
				}
	}
	if( error == "") {
    form.submit();
  } else {
	 alert(error);
	}
}