function check(){

 cname=document.form1.name.value;
 cemail=document.form1.email.value;
 csubject=document.form1.subject.value;
 cmessage=document.form1.message.value;
 cmember=document.form1.member.value;

 if(cname.length=="")
 {
  alert("Name field is empty!");
  return false;
 }
   if(cemail.length=="")
 {
  alert("Email field is empty!");
  return false;
 }

  if(cemail.length!=""&&((cemail.indexOf('@')==-1)||(cemail.indexOf('.')==-1)))
    {
  alert("Email format is not correct!");
  return false;
    }

 if(cmember.length=="")
 {
  alert("Member ID field is empty!");
  return false;
 }
 
 if(csubject.length=="")
 {
  alert("Subject field is empty!");
  return false;
 }

  if(cmessage.length=="")
 {
  alert("Message field is empty!");
  return false;
 }
 return true;
}