<SCRIPT LANGUAGE="JavaScript"> // function parameters are: field - the string field, count - the field for remaining characters number and max - the maximum number of characters 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; } </script> <center> <form name=sample action=""> <font size="1" face="arial, helvetica, sans-serif"> Only 50 characters allowed! // at every key up and key down event the upper function is called <input name="text" type="text" size="40" onKeyDown="CountLeft(this.form.text,this.form.left,50);" onKeyUp="CountLeft(this.form.text,this.form.left,50);"> <input readonly type="text" name="left" size=3 maxlength=3 value="50"> characters left</font> </form> </center>

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