http://lcx.cc/?i=3065
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script type="text/javascript">
<!--
checkInstalled = function(m) {
switch(m){
case 'msn':
try {
new ActiveXObject("MSNMessenger.P4QuickLaunch");
return true;
}
catch (e) {
return false;
case 'qq':
new ActiveXObject("TimwpDll.TimwpCheck");
}
case 'skype':
try{
new ActiveXObject("Skype.Detection");
}catch(e){
}
}
}
//-->
</script>
</head>
<body>
<input type="button" value="檢測有沒有安裝MSN" onclick="alert(checkInstalled('msn'))" />
<input type="button" value="檢測有沒有安裝QQ" onclick="alert(checkInstalled('qq'))" />
<input type="button" value="檢測有沒有安裝SKYPE" onclick="alert(checkInstalled('skype'))" />
</body>
</html>
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