<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function calculate() {
month = document.form.month.selectedIndex;
month = document.form.month.options[month].value;
day = document.form.day.selectedIndex;
day = document.form.day.options[day].value;
year = document.form.year.value;
var oyear=year
var dob = " "+ year +", "+month + ", "+day;
var thenx = new Date(dob);
var year=thenx.getYear();
if (year<100) year="19" + thenx.getYear();
else year=thenx.getYear();
if (year > 1969) wyear=year;
else {
if (oyear<1900) {
if (oyear>1800) {
wrelyear= (eval(oyear)-1801)%(28);
wyear = wrelyear+1981;
}
else wyear = 1970
}
else
if (oyear>1900) {wrelyear= (eval(oyear)-1901)%(28);
wyear= wrelyear+1985
}
else
if (oyear==1900) {wyear= 1990;
}
}
var dob = " "+ wyear +", "+month + ", "+day;
var thenx = new Date(dob);
var theday = thenx.getDay()+1;
var date=thenx.getDate();
var weekday = new Array(6);
weekday[1]="Sonntag";
weekday[2]="Montag";
weekday[3]="Dienstag";
weekday[4]="Mittwoch";
weekday[5]="Donnerstag";
weekday[6]="Freitag";
weekday[7]="Samstag";
if (day != date) alert("Sorry! That appears to be an invalid date!"+day+" ..."+date+"::"+oyear+"..."+year+" "+dob+"=="+wyear+".-.-"+thenx+" "+day+" "+month);
else {
dayborn = weekday[theday];
dob = dayborn + " geboren !";
alert("Du bist an einem " + dob);
}
}
// End -->
</script>
und den teil im body
<table border=2 cellspacing=0 cellpadding=0 bgcolor=white width="185">
<tr>
<td colspan=3 align=center><font face="verdana, arial" size="-1">Wann
bist Du geboren?</font></td>
</tr>
<tr>
<td align=center width="66">
<select name="month">
<option>Monat</option>
<option value="January">Jan </option>
<option value="February">Feb </option>
<option value="March">März </option>
<option value="April">Apr </option>
<option value="May">Mai </option>
<option value="June">Jun </option>
<option value="July">Jul </option>
<option value="August">Aug </option>
<option value="September">Sep </option>
<option value="October">Okt </option>
<option value="November">Nov </option>
<option value="December">Dez </option>
</select>
</td>
<td align=center width="64">
<select name="day">
<option>Tag</option>
<option value="1">01 </option>
<option value="2">02 </option>
<option value="3">03 </option>
<option value="4">04 </option>
<option value="5">05 </option>
<option value="6">06 </option>
<option value="7">07 </option>
<option value="8">08 </option>
<option value="9">09 </option>
<option value="10">10 </option>
<option value="11">11 </option>
<option value="12">12 </option>
<option value="13">13 </option>
<option value="14">14 </option>
<option value="15">15 </option>
<option value="16">16 </option>
<option value="17">17 </option>
<option value="18">18 </option>
<option value="19">19 </option>
<option value="20">20 </option>
<option value="21">21 </option>
<option value="22">22 </option>
<option value="23">23 </option>
<option value="24">24 </option>
<option value="25">25 </option>
<option value="26">26 </option>
<option value="27">27 </option>
<option value="28">28 </option>
<option value="29">29 </option>
<option value="30">30 </option>
<option value="31">31 </option>
</select>
</td>
<td align=center width="45">
<input type=text name=year value="19" size=4 maxlength=4>
</td></tr>
</table><p>
<input type=button value="Berechne" onClick="calculate()">
</center>
</form>
