function checkform ( form ) 
{ 
if (form.name.value == "") { 
alert( "Please enter your name." ); 
form.name.focus(); 
return false ; 
} 
if (form.email.value == "") { 
alert( "Please enter your email address."); 
form.email.focus(); 
return false ; 
} 
if (form.enquiries.value == "") { 
alert( "Please select your query."); 
form.query.focus(); 
return false ; 
} 
return true ; 
}