function adminlogin(form)
{
	if (IsEmpty(form.email)) 
	{ 
		alert('Üres mező!')
		form.email.focus(); 
		return false; 
	} 	
	
	if (IsEmpty(form.pass)) 
	{ 
		alert('Üres mező!')
		form.pass.focus(); 
		return false; 
	} 	
	return true;
}

function vendegkonyvUj(form)
{
	if (IsEmpty(form.nev)) 
	{ 
		alert('Eitel feld!')
		form.nev.focus(); 
		return false; 
	} 	
	
	if (!IsEmpty(form.email))
	{
		if (!isValidEmail(form.email.value)) 
		{ 
			alert('Falsch email!') 
			form.email.focus(); 
			return false; 
		} 
	}
	
	if (IsEmpty(form.txt)) 
	{ 
		alert('Eitel feld!')
		form.txt.focus(); 
		return false; 
	} 


	if (IsEmpty(form.code)) 
	{ 
		alert('Eitel feld!')
		form.code.focus(); 
		return false; 
	} 
	return true;	
}



function IsEmpty(aTextField) {
   if ((aTextField.value.length==0) ||
   (aTextField.value==null)) {
      return true;
   }
   else { return false; }
}


function IsNumeric(sText)
{
   var ValidChars = "0123456789";
   var IsNumber=true;
   var Char;
 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
   }


function isValidEmail(str) {
   return (str.lastIndexOf(".") > 2) && (str.indexOf("@") > 0);
}