if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.match(/7./i)=="7."){
alert("IE 7.0");
}
else if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.match(/8./i)=="8."){
alert("IE 8.0");
}
else if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.match(/9./i)=="9."){
alert("IE 9.0");
}
else if(navigator.appName == "Microsoft Internet Explorer"){
alert("IE 6.0");
}
