// JavaScript Document
 function CountLeft(field, count, max) 
 { 
	 // if the length of the string in the input field is greater than the max value, trim it
	 if (field.value.length > max) 
	 {
		 field.value = field.value.substring(0, max); 
	 }
	 else 
	 {
	 // calculate the remaining characters   
	 count.value = max - field.value.length; 
	 }
 }