/* javascript function to update form field

 *  field		form field that is being counted

 *  count		form field that will show characters left

 *  maxchars 	maximum number of characters

*/

function characterCount(field, count, maxchars) {

	if (field.value.length > maxchars) {

		field.value = field.value.substring(0, maxchars);

		alert("Error:\n\n- You are only allowed to enter up to "+maxchars+" characters.");

	} else {

		count.value = maxchars - field.value.length;

	}

}