function Check(){

if(!f.person_firstname.value){
alert('Please, fill "Name" field!');
f.person_firstname.focus();
return false;}

if(!f.person_email.value){
alert('Please, fill "E-mail" field!');
f.person_email.focus();
return false;}

var regEmail = /^[\w.-]+@([a-z0-9\-]+\.)+[a-z]{2,6}$/i;

if(!regEmail.test(f.person_email.value))
{
alert('Please, fill "E-mail" field correctly!');
f.person_email.focus();
return false;
}

if(!f.skills.value){
alert('Please, fill "Your inquiry" field!');
f.skills.focus();
return false;}

jsfield = new String(f.skills.value);
if (jsfield.length>1000){
alert ('Message must be less more then 1000 symbols!');
f.skills.value='';
f.skills.focus();
return false;}

return true; }