function show(id)
{	
	if(document.getElementById(id).style.display == 'block') 
	{
		document.getElementById(id).style.display='none'; 
	}
	else
	{
		document.getElementById(id).style.display='block'; 
	}
}

function submitContacts()
{
    var error = 0;

    var err = document.getElementById('err');

    if (document.getElementById('name').value == '')
    {
        error++;
    }

    if (document.getElementById('email').value == '')
    {
        error++;
    }
    
    if (document.getElementById('subject').value == '')
    {
        error++;
    }
    
    if (document.getElementById('message').value == '')
    {
        error++;
    }

    if ( error == 0 ) 
    {	
	err.style.display = 'none';
	return true; 
    }
    else
    {
	err.style.display = '';
	return false;
    }
}