How to hide items from context menu of a sharepoint list in SharePoint 2010 without modifying CORE.JS and by using javascript or jquery in CEWP  :

Item are as follows :-

Version History

Compliance Details

Manage Permissions

Alert Me

You can check following links:

http://sharepointism.blogspot.com/2008/05/hiding-context-menu-item-of-document.html

http://msdn.microsoft.com/en-us/library/cc768565%28v=office.12%29.aspx

http://www.codeproject.com/KB/sharepoint/sharepoint-customization.aspx?display=Print

 Use Following script :-

<script type="text/javascript">

window.onload = function() 
{

        AddVersionsMenuItem = function (m,ctx) { }
    
}</script>

This script is used to hide Default Version History from Context Menu.

to hide another items you need to find that menu item from Core.js by its Name and add it in function as follows:

<script type="text/javascript">

window.onload = function() 
{

        YourMenuItemName = function (m,ctx) { }
    
}</script>