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

rekbun/browserscope,shivanikhosa/browserscope,t-artistik/browserscope,shivanikhosa/browserscope,t-artistik/browserscope,rekbun/browserscope,tectronics/browserscope,tectronics/browserscope,shivanikhosa/browserscope,tectronics/browserscope,tectronics/browserscope,t-artistik/browserscope,t-artistik/browserscope,shivanikhosa/browserscope,rekbun/browserscope,rekbun/browserscope