function check() {

	 var message = ""; // create error message string variable, with nothing in it
	
	 // Test the Name Length 
						 
	if (document.form1.visitor.value.length == 0) { 
								 message = message + "Please enter your name\n"; 
								 } 
										if (document.form1.email.value.length == 0) { 
		message = message + "Please enter your email\n"; 
								 } 
	 if (document.form1.comments.value.length == 0) {
								 message = message + "Please enter your comments\n";
								 }  
	
		if ( message.length > 0 ) { // is there an error message?
									alert( message ); // display error message
								 return false; // return bad, not ok to process
								 }
	 else { 
								 return true; // no error message to display, return ok to process 
								 } 

} // end of the function check()