function showerror() { 
alert("Неверный электронный адрес"); 
document.forms[fname].elements['Serferemail'].focus();
}
function check(fname) 
{ 
 txt2=document.forms[fname].elements['serferName_registration'].value; 
  if (txt2 == "") { 
   alert("Введите имя"); 
   document.forms[fname].elements['serferName_registration'].focus();
	   return(false) 
   } 
 txt6=document.forms[fname].elements['Serferemail'].value; 
  if (txt6 == "") { 
   alert("Введите E-mail"); 
   document.forms[fname].elements['Serferemail'].focus();
	   return(false) 
   }
  if (txt6.indexOf(".") == -1) { 
    showerror()
		   return(false) 
   }
dog = txt6.indexOf("@"); 
 if (dog == -1) { 
     showerror()
   return(false) 
 }
if ((dog < 1) || (dog > txt6.length - 2)) { 
  showerror(); 
  return(false) 
 }
if ((txt6.charAt(dog - 1) == '.') || (txt6.charAt(dog + 1) == '.')) { 
  showerror(); 
 return(false) 
      }
if ((txt6.indexOf(" ") > 0) && (txt6.indexOf(" ") < (txt6.length - 1))) { 
    showerror()
	return(false) 
  }
if ((txt6.charAt(dog - 1) == '.') || (txt6.charAt(dog + 1) == '.') || (txt6.indexOf(".") > (txt6.length - 3) )) { 
  showerror(); 
 return(false) 
  }	  
txt7=document.forms[fname].elements['password_registration'].value; 
  if (txt7 == "") { 
   alert("Введите пароль"); 
   document.forms[fname].elements['password_registration'].focus();
	   return(false) 
   }
txt8=document.forms[fname].elements['passwordConfirm_registration'].value; 
  if (txt8 == "") { 
   alert("Введите подтверждение пароля"); 
   document.forms[fname].elements['passwordConfirm_registration'].focus();
	   return(false) 
   }
  if (txt7 != txt8) { 
   alert("Значения в полях ввода паролей не совпадают!"); 
   document.forms[fname].elements['password_registration'].focus();
	   return(false) 
   }
}

function check2(fname) { 
	txt7=document.forms[fname].elements['Yourtext'].value; 
  if (txt7 == "") { 
   alert("Введите текст объявления"); 
   document.forms[fname].elements['Yourtext'].focus();
	   return(false) 
   }
txt2=document.forms[fname].elements['Yourcontact'].value; 
  if (txt2 == "") { 
   alert("Введите контактные данные"); 
   document.forms[fname].elements['Yourcontact'].focus();
	   return(false) 
   } 
txt6=document.forms[fname].elements['Youremail'].value; 
  if (txt6 == "") { 
   alert("Введите E-mail"); 
   document.forms[fname].elements['Youremail'].focus();
	   return(false) 
   }
  if (txt6.indexOf(".") == -1) { 
    showerror1()
		   return(false) 
   }
dog = txt6.indexOf("@"); 
 if (dog == -1) { 
     showerror1()
   return(false) 
 }
if ((dog < 1) || (dog > txt6.length - 2)) { 
  showerror1(); 
  return(false) 
 }
if ((txt6.charAt(dog - 1) == '.') || (txt6.charAt(dog + 1) == '.')) { 
  showerror1(); 
 return(false) 
      }
if ((txt6.indexOf(" ") > 0) && (txt6.indexOf(" ") < (txt6.length - 1))) { 
    showerror1()
	return(false) 
  }
if ((txt6.charAt(dog - 1) == '.') || (txt6.charAt(dog + 1) == '.') || (txt6.indexOf(".") > (txt6.length - 3) )) { 
  showerror1(); 
 return(false) 
  }	  
}
function showerror1() { 
alert("Неверный электронный адрес"); 
document.forms[fname].elements['Youremail'].focus();
}