Validation Pattern: requiring decimals

Question

ISSUE ONE:
I want to have users input a number to the nearest hundredth - concerning grade point averages. For instance, if the number is 2.96, I do not want users to input 3.0. They must have two decimal places. How do I do this?
ISSUE TWO:
In reference to issue 1, how do I make sure if they try to input more decimals that it automatically rounds to two? For instance, if the user tries to input 2.9599, I want it to round to 2.96. Can this be done?

Answer 1

Here is the entire solution.....
use a numeric field with data Display Pattern, Edit Pattern and DataPattern similar to zzzzzzzzzzzz9.999
and then have the following JavaScript code in exit event (may have to customize as required).
var val = this.rawValue
this.rawValue = Math.round(val*1000)/1000; //answer for send question
//answer for first question starts here
val = this.formattedValue;
var myDot = val.indexOf(".");
var rDot = val.substring(myDot+1);
//xfa.host.messageBox(""+rDot);
if (rDot == "000") {
xfa.host.messageBox("Integer values are not allowed.");
xfa.host.setFocus(this.somExpression);
Good Luck,
SekharN.