r=pollmann,a=chofmann Basically, this just calls a method in the security manager to determine if a page loaded from the document's URI can be allowed to open a page from the ACTION URI. This is the same check that's currently used on window.open, for example. git-svn-id: svn://10.0.0.236/trunk@56044 18797224-902f-48f8-a5cc-f745e15eee43