NOTE: This is the XUL method on <browser> / <tabbrowser>, not the global function in chrome://browser/content/browser.js. Please check which one you're documenting! (This one has no post data parameter, see loadURIWithFlags for a version that does)
- 
    loadURI( uri, referrer, charset )
- Return type: no return value
- Load a URL into the document, with the given referrer and character set.
- 
    The first argument should be a string, not a nsIURIobject. To get a string from annsIURI, usensIURI.specornsIURI.asciiSpec