function validate(){
 var name=document.form1.name.value;
 var email=document.form1.email.value;
 emailpat = /^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9])+(\.[a-zA-Z0-9_-]+)+$/;
 if(name.match(/^$/)){
  alert("Please Fill the Name field.");
  document.form1.name.focus();
  return false;
 }
 if(email.match(/^$/)){
  alert("Please Fill the Email field.");
  document.form1.email.focus();
  return false;
 }
 if(!emailpat.test(email)){
  alert("Please Fill a valid Email.");
  document.form1.email.focus();
  return false;
 }
return true;
}