function validateComment(f) {

	if (f.comment.value == "") {
		alert("Please enter a comment!");
        f.comment.focus();
		return false;	
	}
	if (! textCounter(f.comment,100)) {
		return false;
	}

return true;
}

function textCounter( field, maxlimit ) {
	if ( field.value.length > maxlimit ) {
		field.value = field.value.substring( 0, maxlimit );
		alert( 'Your message is limited to ' + maxlimit + ' characters' );
		return false;
	}
return true;
}