Jscript Reference for Microsoft Dynamics CRM 2011

Here’s a quick reference guide covering Microsoft CRM 2011’s syntax for common jscript requirements. 

Most of the examples are provided as functions that you can easily test in the OnLoad event of the Entity form to see a working example. 

http://garethtuckercrm.com/2011/03/16/jscript-reference-for-microsoft-dynamics-crm-2011/

Custom Lookup with multiple entity in CRM 2011

If you create custom lookup in CRM, this lookup is oriented only for one entity.

A very good post to create customer lookup using simple JS.

In a custom lookup we can configure our own entity list. Give a try.

http://mscrmgoodies.blogspot.in/2012/02/custom-lookup-in-crm-2011.html