Hi, I hope you can help. I'm very savy when it comes to Javascript although most of the time I get the code to run the way I want. Not this time. I'm trying to use the calendarpopup.js and receive an error all the time. http://www.mattkruse.com/javascript/calendarpopup/ Here is the code I use on the page: <SCRIPT LANGUAGE="JavaScript" SRC="CalendarPopup.js"></SCRIPT> ................ <form> Default calendar.<BR> <SCRIPT LANGUAGE="JavaScript" ID="js1"> var cal1 = new CalendarPopup(); </SCRIPT> <INPUT TYPE="text" NAME="date1" VALUE="" SIZE=25> <A HREF="#" onClick="cal1.select(document.forms[0].date1,'anchor1','MM/dd/yyyy'); return false;" TITLE="cal1.select(document.forms[0].date1,'anchor1','MM/dd/yyyy'); return false;" NAME="anchor1" ID="anchor1">select</A> ........ The error is Error "Cal1' is Null or not an object Let me know if you can help. Peace, JP