function validatecontact(){
var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;

if(document.contactus.name.value==""){
alert("Please enter yor first name");
document.contactus.name.focus();
return false;
}
if(document.contactus.email.value==""){
alert("Please enter your email id");
document.contactus.email.focus();
return false;
}
if (filter.test(document.contactus.email.value))
	 {
	 }
 else
	  {
	  alert("Please Enter Valid Email Address");
	  document.contactus.email.focus();
	  return false;
	  }
	  if(document.contactus.question.value==""){
	  alert("Please enter your question");
	  document.contactus.question.focus();
	  return false;
	  }
}