// JavaScript Document
var max_chars = 300;

function count_chars(){
	var ph_comments_text = document.ph_volunteer_form.ph_comments.value;
	var len = ph_comments_text.length;
	
	if (len > max_chars) {
		ph_comments_text = ph_comments_text.substring(0, max_chars);
		document.ph_volunteer_form.ph_comments.value = ph_comments_text;
		return false;
	}
	document.getElementById('limit').innerHTML = max_chars - len;
}