function validate( comments )
{
if 
    		( comments.name_user.value == "" ) {
			alert("Client Name is Missing");
			comments.name_user.focus();
			return false;
		}

else if( comments.email_user.value == "" ) 
		{ 
		alert("Email Address is Missing");
		comments.email_user.focus();
			return false;
		}

else if(!(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(comments.email_user.value))) {
			alert("Invalid Email Address");
			comments.email_user.focus();
			return false;
		}
else if( comments.topic_subject.value == "" ) 
		{ 
		alert("Topic Subject Is Miassing");
		comments.topic_subject.focus();
			return false;
		}
else if( comments.topic_detail.value == "" ) 
		{ 
		alert("Topic Detail is Missing");
		comments.topic_detail.focus();
			return false;
		}
}