Uncomment the Function and Add Code
Once the program name to be extended (e.g. payPlanMainPlanPage) and the template (e.g. tabPage2.xsl) to use are known, the associated template jsp file can be copied from the web application source's /cm_​templates directory to the /cm directory and renamed to have the form ext_​XXXX.jsp, where "XXXX" is the name of the program to be extended.
For example, in this case the jsp user exit template ./cm_​examples/tabPageExit.jsp would be copied and renamed to ./cm/ext_​payPlanMaintPlanPage.jsp. The following coding change inside the extPostOnWindowLoad() function would then be made for the modified behavior.

function extPostOnWindowLoad(){
//This should be used to set values/attributes when the page loads.
//This includes actions after a default.
//This function is called AFTER SPL's internal functions are called

protectField("START_DT");
alert ("Start Date Field is disabled. Defaulted to Current Date.");

}