agent = navigator.appVersion;
if (navigator.appName!="Netscape")
{
start = agent.indexOf("MSIE");
if(agent.substring(start+5,start+7)<5)
{self.location="navigateur.htm";}
}
if (navigator.appName=="Netscape")
{
start = agent.indexOf("Mozilla");
if(agent.substring(start,start+4)<4.7)
{self.location="navigateur.htm";}
}