What am not getting about substring()?
I'm trying to do is separate out the dd and yy
from input coming in as mm/dd/yy.
(My mm is parsing out correctly).

	var mm = apptdate.substring(0, apptdate.indexOf("/"));
	var ddlength = (apptdate.lastIndexOf("/")-1-apptdate.indexOf("/") );
	var ddstartat = (apptdate.indexOf("/")+1);
	var dd = apptdate.substring(ddstartat, ddlength);
	var yylength = (apptdate.length - 1 - apptdate.lastIndexOf("/"));
	var yystartat = (apptdate.lastIndexOf("/")+1);
	var yy = apptdate.substring(yystartat, yylength);

Wouldn't this be easier:

var datearray=apptdate.split('/');
var mm=datearray[0];
var dd=datearray[1];
var yy=datearray[2];