function tr(obj){
 s=obj.value;
 re=/^\s+/;s=s.replace(re, '');
 re=/\s+$/;s=s.replace(re, '');
 obj.value=s;
 return s;
}

function ve(e){
 ind=e.indexOf('\@');return (ind>0 && ind<s.length-1?true:false);
}

function validate_mailform(){
 var f=document.fsubs;
 if (tr(f.email)==''||!ve(f.email.value)) {alert('Ââåäèòå ïðàâèëüíûé email!');}
 else { f.submit(); }
}