Fix STS test (onload event fired twice in Firefox 4)
Fix STS test (onload event fired twice in Firefox 4)

shinyChen/browserscope,ollie314/browserscope,ollie314/browserscope,shinyChen/browserscope,image72/browserscope,ollie314/browserscope,githubashto/browserscope,githubashto/browserscope,shinyChen/browserscope,ollie314/browserscope,shinyChen/browserscope,image72/browserscope,githubashto/browserscope,image72/browserscope,image72/browserscope,githubashto/browserscope