function validate()
{
 if (document.contactusform.firstname.value == "")
 {
	 alert ("Please enter your First name !");
	 document.contactusform.firstname.focus();
	 return false;
 }
 if ((document.contactusform.email.value.indexOf("@") == -1) || (document.contactusform.email.value.indexOf(".")== -1))
 {
	 alert("Enter valid E-Mail address!");                
	 document.contactusform.email.focus();        
	 document.contactusform.email.select();                                                
	 return false;
 }    
  if (document.contactusform.course.value == "")
 {
	 alert ("Please enter your Course !");
	 document.contactusform.course.focus();
	 return false;
 }
     document.contactusform.action="contactform.php";
 
document.contactusform.submit(); 
}