var axu_url_ie800x600="800600.css";  
var axu_url_ie1024x768="1024768.css";
var axu_url_ie1280x768="1280768.css";
var axu_url_ie1280x800="1280800.css";
var axu_url_ie1280x1024="cssstyle/12801024ie.css";
var tableie="tableie.css";
function getOs()
{
   if(navigator.userAgent.indexOf("MSIE")>0)return 1;
   if(isFirefox=navigator.userAgent.indexOf("Firefox")>0)return 2;
   if(isSafari=navigator.userAgent.indexOf("Safari")>0)return 3;   
   if(isCamino=navigator.userAgent.indexOf("Camino")>0)return 4;
   if(isMozilla=navigator.userAgent.indexOf("Opera")>0)return 5;
   return 0;
   if (window.navigator.userAgent.indexOf("MSIE")>=1)
{
if((screen.width==800)&&(screen.height==600))  
document.getElementById("skin").href=axu_url_ie800x600;
if((screen.width==1024)&&(screen.height==768))  
document.getElementById("skin").href=axu_url_ie1024x768;
if((screen.width==1280)&&(screen.height==768))  
document.getElementById("skin").href=axu_url_ie1280x768;
if((screen.width==1280)&&(screen.height==800))  
document.getElementById("skin").href=axu_url_ie1280x800;
if((screen.width==1280)&&(screen.height==1024))  
document.getElementById("skin").href=axu_url_ie1280x1024;
else{document.getElementById("skin").href=tableie;
	}
}else{
if (window.navigator.userAgent.indexOf("Firefox")>=1)
{
//浏览器为Firefox
}else{
if (window.navigator.userAgent.indexOf("Opera")>=1)
{
//浏览器为Firefox
}else{
//浏览器为其他
}
}

}