Dojo support a lot of context menus, but my application has error with that in IE (everything is ok with FF). The problem is that when I click the right button to show the menu, the menu itself is ok, but all the other things disappeared leaving the background image of the BODY until next click (no matter left or right button).
This problem seems to be related with the CSS of the BODY. The css of BODY is like this:

body {
background: url(../images/bg1024.JPG) no-repeat;
width:1024px;
height:768px;
}

I am using the tabcontainer. The tabs work great. I can switch between the four tabs and it works. However when I open a new tabbed window in Firefox and then go back to my page, the tabcontainer from my page disappears. When I test it in IE, the container does not show up at all. That is a bit disconcerting. Some of my form elements have not been given a name. My form is defined as follows:

<div id="mainTabContainer" dojoType="dijit.layout.TabContainer">