function testNavigator(){
var message="系统检测到你的浏览器的版本比较低,建议你使用IE5.5以上的浏览器,否则有的功能可能不能正常使用.你可以到
http://www.microsoft.com/china/免费获得IE的最新版本!";
var ua=navigator.userAgent;
var ie=false;
if(navigator.appName=="Microsoft Internet Explorer")
{
ie=true;
}
if(!ie){
alert(message);
return;
}
var IEversion=parseFloat(ua.substring(ua.indexOf("MSIE ")+5,ua.indexOf(";",ua.indexOf("MSIE "))));
if(IEversion< 5.5){
alert(message);
return;
}
}
//ensure current window is the top window
function checkTopWindow(){
if(window.top!=window && window.top!=null){
window.top.location=window.location;
}
}
//force close window
function closeWindow()
{
var ua=navigator.userAgent;
var ie=navigator.appName=="Microsoft Internet Explorer"?true:false;
if(ie)
{
var IEversion=parseFloat(ua.substring(ua.indexOf("MSIE ")+5,ua.indexOf(";",ua.indexOf("MSIE "))));
if(IEversion< 5.5)
{
var str = '<object id=noTipClose classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">'
str += '<param name="Command" value="Close"></object>';
document.body.insertAdjacentHTML("beforeEnd", str);
try
{
document.all.noTipClose.Click();
}
catch(e){}
}
else
{
window.opener =null;
window.close();
}
}
else
{
window.close()
}
}
//tirm string
function trim(s)
{
return s.replace( /^s*/, "" ).replace( /s*$/, "" );
}
//URI encode
function encode(content){
return encodeURI(content);
}
//URI decode
function decode(content){
return decodeURI(content);
}