📄 4.txt
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<html>
<head>
<script type="text/javascript">
function getCookie(c_name)
{
if (document.cookie.length>0)
{
c_start=document.cookie.indexOf(c_name + "=")
if (c_start!=-1)
{
c_start=c_start + c_name.length+1
c_end=document.cookie.indexOf(";",c_start)
if (c_end==-1) c_end=document.cookie.length
return unescape(document.cookie.substring(c_start,c_end))
}
}
return null
}function setCookie(c_name,value,expiredays)
{var exdate=new Date()exdate.setTime(exdate.getTime()+(expiredays*24*3600*1000))
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : "; expires="+exdate)
}function checkCookie()
{
username=getCookie('username')
if (username!=null)
{alert('Welcome again '+username+'!')}
else
{username=prompt('Please enter your name:',"")
setCookie('username',username,365)}
}
</script>
</head><body onLoad="checkCookie()">
</body>
</body>
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