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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<script type="text/javascript">
function $(id){
return document.getElementById(id);
}
function cal(){
var val1 = parseInt($("txt1").value, 10), val2 = parseInt($("txt2").value, 10);
if(isNaN(val1) || isNaN(val2)){
return;
}
var time = new Date("2111/9/17") - new Date(new Date().toLocaleDateString().replace(/年|月/g, "/").replace("日", ""));
var ret = ( val1 - val2 ) * 2 / (time / (24 * 60 * 60 * 1000));
$("txt3").value = ret;
}
</script>
</HEAD>
<BODY>
<input type="text" id="txt1" onkeyup="cal()" /> -
<input type="text" id="txt2" onkeyup="cal()" /> =
<input type="text" id="txt3" readonly="readonly" />
</BODY>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<script type="text/javascript">
function $(id){
return document.getElementById(id);
}
function cal(){
var val1 = parseInt($("txt1").value, 10), val2 = parseInt($("txt2").value, 10);
if(isNaN(val1) || isNaN(val2)){
return;
}
var d = new Date(), time = new Date("2111/9/17") - new Date(d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate());
var ret = ( val1 - val2 ) * 2 / (time / (24 * 60 * 60 * 1000));
$("txt3").value = ret;
}
</script>
</HEAD>
<BODY>
<input type="text" id="txt1" onkeyup="cal()" /> -
<input type="text" id="txt2" onkeyup="cal()" /> =
<input type="text" id="txt3" readonly="readonly" />
</BODY>
</HTML>