function checkcontactus()
{
 if (document.contactusform.name.value=='') {
   alert("Please enter your name");
   document.contactusform.name.focus();
   return false;
 }

 if (document.contactusform.email.value=='') {
   alert("Please enter your e-mail address");
   document.contactusform.email.focus();
   return false;
 }

 if (document.contactusform.subject.value=='') {
   alert("Please enter Subject");
   document.contactusform.subject.focus();
   return false;
 }

 if (document.contactusform.turing.value=='') {
   alert("Please enter Turing code");
   document.contactusform.turing.focus();
   return false;
 }

 return true;
}