Add some time to a date script

[TVining]

I have the following script on my website. The idea is that the user puts in a date, say January 1st. The script has to figure what day they actually will graduate a course. The students enter Monday, Tues, Wed, or Thurs, and then graduate on the 7th Friday. (regardless of what day they enter)

However, I need to modify it so that if the "enter date" is beyond 25 oct 2008, they graduate on the 9th Friday.

Can anyone help? I appologize, I'm just not a script type.

Thank you!

<script type="text/javascript">
<!-- Hide this code from non-JavaScript browsers
function GradDate() {
UDate=document.forms[0].entry.value; // pick up user entry
i1=UDate.indexOf('/'); // find first slash
i2=UDate.indexOf('/',i1+1); // ...second slash
UDate_M=UDate.substring(0,i1); // everything before first slash
UDate_D=UDate.substring(i1+1,i2); // ...between two slashes
UDate_Y=UDate.substring(i2+1); // ...after second slash
UDate_Y=UDate_Y*1+2000; // 2-digit year to 4-digit
UDate_M=UDate_M-1; // jan-dec=0-11
Now=new Date(UDate_Y,UDate_M,UDate_D); // convert to a date
Now_D=Now.getDay(); // sunday-saturday=0-6
Diff=47-Now_D; // seventh Friday later
Factor=24*60*60*1000; // seconds per day
Target=new Date(Now*1+Diff*Factor); // the target date
Target_M=Target.getMonth();
Target_D=Target.getDate();
Target_Y=Target.getYear();
if (Target_Y < 70) { Target_Y=Target_Y+2000; }
if (Target_Y < 1900) { Target_Y=Target_Y+1900; }
Target_M=Target_M*1+1; // Jan-Dec = 1-12
Formatted=Target_M+'-'+Target_D+'-'+Target_Y;
document.forms[0].result.value=Formatted; // display on the form
}
// End hiding -->

[acoder]

Create a date object using the Date() constructor for the 25th of October and compare to the inputted date.

If it's greater than, add 14 days to the 7th Friday (to get the 9th Friday).

[TVining]

Thanks. Now for the big question....Whe re do I put that, and what would it look like?

:-P

Sorry, I'm script stupid.

[acoder]

Heh, two months later ;)

Create a date and compare it with Now:
[code=javascript]compareDate = new Date(2008,9,25) ;// Oct 25,2008
//after declaring Now and Diff
if (Now > compareDate) diff += 14;[/code]