// JavaScript Document


function check_email(mail){

	if ((mail.indexOf ('@') == -1) || (mail.indexOf ('.') == -1) || (mail.indexOf (' ') != -1)){
	   return false;
    }else{
	  return true;
	}

}

function check_all(var1, var2, err1, err2){

  var err = 0;
 
  if(var1 != 0){
	err = err + 1;
	document.getElementById(err1).style.display = "block";
  }else{
    document.getElementById(err1).style.display = "none";
  }

  if(var2 == 0){	  
    document.getElementById(err2).style.display = "none";
  }else{
    err = err + 1;
	document.getElementById(err2).style.display = "block";
	
  }
  

  if(err != 0){
    return 1
  }else{
    return 0
  }

}

function hideDiv(id){
	 document.getElementById(id).style.display = 'none'; 
  }
  
  function showDiv(id){
	 document.getElementById(id).style.display = 'block';
  }