// JavaScript Document

function roll_down(id)  {

  document.getElementById("r_"+id).style.visibility="hidden";
  document.getElementById(id).style.position="relative";
  document.getElementById(id).style.top=0;
}

function roll_up(id)  {
   
   document.getElementById("r_"+id).style.visibility="visible";
   document.getElementById(id).style.top= -99999+"px";
   document.getElementById(id).style.position="absolute";
}

function email_check(text)
{
	error_message = "Hibás e-mail cím!";
	if (text.indexOf('@') == -1) return error_message;
    	else  if (text.indexOf('.') == -1) return error_message;
              else if ((text.length-text.lastIndexOf('.'))>4 || (text.length-text.lastIndexOf('.'))<2)  return error_message;
      				else  if (text.indexOf('.')==text.indexOf('@')+1)  return error_message;
						else return 'ok';	
}

function check_form ()
{
if (document.ajanlat.nev.value == '' || document.ajanlat.email.value == '' || document.ajanlat.tel.value == '' || document.ajanlat.tip.value == '' || document.ajanlat.m2.value == '' || document.ajanlat.uzenet.value == '')
    {alert ('Kérem töltse ki valamennyi mezőt!');
    return false ;
	}
	
   var text=document.ajanlat.email.value;

    if (email_check(text) != 'ok')
    {
      alert('Hibás e-mail cím!');
      document.ajanlat.email.focus();
      document.ajanlat.email.select();
      return false;
    }


document.ajanlat.submit();	
}