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<html>
<head>
<title> </title>
<script language="javascript">
function check(){
var line1=document.getElementById("line1").value;
var line2=document.getElementById("line2").value;
var line3=document.getElementById("line3").value;
if((line1+line2)>line3&&(line1+line3)>line2&&(line3+line2)>line1){
alert("Äܹ¹³ÉÈý½ÇÐÎ!");
}else{
alert("²»Äܹ¹³ÉÈý½ÇÐÎ!");
}
}
</script>
</head>
<body>
<input type="text" name="line1" id="line1"> <br>
<input type="text" name="line2" id="line2" > <br>
<input type="text" name="line3" id="line3" > <br>
<input type="button" value="ÅжÏÊÇ·ñ¹¹³ÉÈý½ÇÐÎ"onclick="check()">
</body>
</html>
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<html>
<head>
</head>
<body>
<div id="main">
<p class="intro">welcome to my web site </p>
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