function validate_contact() {

if ( document.getElementById('your_name').value.length < 2 ) {
    alert("Please provide a real name");
    return false;
    }

if (document.getElementById("your_address").value.indexOf('@')==-1  || document.getElementById("your_address").value.indexOf('.')==-1  || document.getElementById("your_address").value.length <= 7 )
    {
    alert("Please provide your email");
    return false;
    }


if (document.getElementById("your_message").value.length < 5 )	{
    alert("Please write a message ");
    return false;
    }
}