Hide left navigation on OOB SharePoint masterpage
I have often heard users saying they do not prefer losing space with that left navigation on SharePoint pages. Well, you can just remove it OOB:
SharePoint 2007 default.master:
Add a Content Editor Web Part to the page where you would not like the left navigation to show and add the code below and apply changes.
<style>.ms-navframe{ display:none; }</style>
SharePoint 2010 v4.master:
Add a Content Editor Web Part to the page where you would not like the left navigation to show and add the following to the HTML Source.
<Style>
body #s4-leftpanel
{
display: none;
}
.s4-ca
{
margin-left: 0px;
}
</style>
The CSS above hides the left navigation Div, and then sets the content area to not have a left margin. Hope this helps!




Here is a preboxed solution http://vishalseth.com/post/2011/07/22/Removing-Sharepoint-Top-and-Left-Navigation-Using-URL-Query-String-Parameter.aspx