var homeurl="http://sandbox.livevideo.com/user/home.aspx";var canvasurl="http://sandbox.livevideo.com/api/developer/Canvas.aspx";var profileurl="http://sandbox.livevideo.com/user/";function navigate(surface,appid,ownerid,optprams){alert('navigate');if(surface=='HOME'&&CurrentSurface!='HOME')parent.window.location=homeulr+'?'+'appid='+appid+'&ownerid='+ownerid+'&surface='+surface+'&optprams='+optprams;if(surface=='CANVAs'&&CurrentSurface!='CANVAS')window.location=canvasurl+'?'+'appid='+appid+'&ownerid='+ownerid+'&surface='+surface+'&optprams='+optprams;if(surface=='PROFILE'&&CurrentSurface!='PROFILE')window.location=profileurl+'?'+'appid='+appid+'&ownerid='+ownerid+'&surface='+surface+'&optprams='+optprams;}