function formsubmit(a)
{         
    if (a.username.value=="") { alert("Your Username?"); a.username.focus();  return false; }
    if (a.email.value=="")  { alert("Your Email Address?"); a.email.focus();  return false; }
        
    if (a.email.value.search(/^[\w\d\-\.]+@[\w\d\-\.]+\.[\w\-\.]+$/gi)!=0)
        {
            alert("Incorrect Email!");
            a.email.focus(); 
            return false;
        }        

    var t=0;
    for (i=0; i<15; i++)     
    {      
        if (a.acta[i].checked==true) {
            t=1;
        }
    }        
    
    if (t==0) { alert("Your comment or question relates to?");  return false; }
            

    if (a.texte.value=="")  { alert("Write your comment or question?"); a.texte.focus();  return false; }        
    
    if (confirm("Send your comment?")) return true;
    else return false;
}